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1242204013 is a prime number
BaseRepresentation
bin100101000001010…
…1000011101101101
310012120102111120001
41022002220131231
510021001012023
6323132424301
742532363021
oct11202503555
93176374501
101242204013
11588212296
122a8018091
1316a48027b
14bad98381
15740c56ad
hex4a0a876d

1242204013 has 2 divisors, whose sum is σ = 1242204014. Its totient is φ = 1242204012.

The previous prime is 1242203971. The next prime is 1242204017. The reversal of 1242204013 is 3104022421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065500164 + 176703849 = 32642^2 + 13293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1242204013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242204017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621102006 + 621102007.

It is an arithmetic number, because the mean of its divisors is an integer number (621102007).

Almost surely, 21242204013 is an apocalyptic number.

It is an amenable number.

1242204013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242204013 is an equidigital number, since it uses as much as digits as its factorization.

1242204013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1242204013 is about 35244.9147112034. The cubic root of 1242204013 is about 1074.9732138269.

Adding to 1242204013 its reverse (3104022421), we get a palindrome (4346226434).

The spelling of 1242204013 in words is "one billion, two hundred forty-two million, two hundred four thousand, thirteen".