123125432042 has 16 divisors (see below), whose sum is σ = 195358046400. Its totient is φ = 58079416032.

The previous prime is 123125432033. The next prime is 123125432071. The reversal of 123125432042 is 240234521321.

It is a junction number, because it is equal to n+sod(n) for n = 123125431996 and 123125432014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18329792 + ... + 18336507.

It is an arithmetic number, because the mean of its divisors is an integer number (12209877900).

Almost surely, 2^123125432042 is an apocalyptic number.

123125432042 is a deficient number, since it is larger than the sum of its proper divisors (72232614358).

123125432042 is a wasteful number, since it uses less digits than its factorization.

123125432042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36666397.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 123125432042 its reverse (240234521321), we get a palindrome (363359953363).

The spelling of 123125432042 in words is "one hundred twenty-three billion, one hundred twenty-five million, four hundred thirty-two thousand, forty-two".