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1242011233 is a prime number
BaseRepresentation
bin100101000000111…
…1001011001100001
310012120001201010001
41022001321121201
510020423324413
6323124340001
742530631001
oct11201713141
93176051101
101242011233
115880a0471
122a7b44601
1316a4135b8
14bad48001
15740884dd
hex4a079661

1242011233 has 2 divisors, whose sum is σ = 1242011234. Its totient is φ = 1242011232.

The previous prime is 1242011213. The next prime is 1242011261. The reversal of 1242011233 is 3321102421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241293824 + 717409 = 35232^2 + 847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1242011233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242011233.

It is not a weakly prime, because it can be changed into another prime (1242011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621005616 + 621005617.

It is an arithmetic number, because the mean of its divisors is an integer number (621005617).

Almost surely, 21242011233 is an apocalyptic number.

It is an amenable number.

1242011233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242011233 is an equidigital number, since it uses as much as digits as its factorization.

1242011233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1242011233 is about 35242.1797424620. The cubic root of 1242011233 is about 1074.9176019051.

Adding to 1242011233 its reverse (3321102421), we get a palindrome (4563113654).

It can be divided in two parts, 12420 and 11233, that added together give a triangular number (23653 = T217).

The spelling of 1242011233 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred thirty-three".