123642512433 has 48 divisors (see below), whose sum is σ = 201179676672. Its totient is φ = 72494460000.

The previous prime is 123642512363. The next prime is 123642512443. The reversal of 123642512433 is 334215246321.

123642512433 is a `hidden beast` number, since 1 + 2 + 3 + 642 + 5 + 1 + 2 + 4 + 3 + 3 = 666.

It is not a de Polignac number, because 123642512433 - 2¹⁸ = 123642250289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123642512443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16590358 + ... + 16597808.

It is an arithmetic number, because the mean of its divisors is an integer number (4191243264).

Almost surely, 2^123642512433 is an apocalyptic number.

It is an amenable number.

123642512433 is a deficient number, since it is larger than the sum of its proper divisors (77537164239).

123642512433 is a wasteful number, since it uses less digits than its factorization.

123642512433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906 (or 12903 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

Adding to 123642512433 its reverse (334215246321), we get a palindrome (457857758754).

The spelling of 123642512433 in words is "one hundred twenty-three billion, six hundred forty-two million, five hundred twelve thousand, four hundred thirty-three".