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1230133457 = 71295313567
BaseRepresentation
bin100100101010010…
…0101100011010001
310011201201020212102
41021110211203101
510004403232312
6322022010145
742324650630
oct11124454321
93151636772
101230133457
11581418523
122a3b76955
13167b15127
14b9535517
1572eddec2
hex495258d1

1230133457 has 8 divisors (see below), whose sum is σ = 1406078976. Its totient is φ = 1054240992.

The previous prime is 1230133451. The next prime is 1230133469. The reversal of 1230133457 is 7543310321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1230133457 - 24 = 1230133441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230133451) 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 in 7 ways as a sum of consecutive naturals, for example, 83888 + ... + 97454.

It is an arithmetic number, because the mean of its divisors is an integer number (175759872).

Almost surely, 21230133457 is an apocalyptic number.

It is an amenable number.

1230133457 is a deficient number, since it is larger than the sum of its proper divisors (175945519).

1230133457 is a wasteful number, since it uses less digits than its factorization.

1230133457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26527.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 1230133457 is about 35073.2584314603. The cubic root of 1230133457 is about 1071.4800193293.

Adding to 1230133457 its reverse (7543310321), we get a palindrome (8773443778).

The spelling of 1230133457 in words is "one billion, two hundred thirty million, one hundred thirty-three thousand, four hundred fifty-seven".

Divisors: 1 7 12953 13567 90671 94969 175733351 1230133457