42123129376 has 12 divisors (see below), whose sum is σ = 82929911022. Its totient is φ = 21061564672.

The previous prime is 42123129299. The next prime is 42123129439. The reversal of 42123129376 is 67392132124.

It can be written as a sum of positive squares in only one way, i.e., 40773301776 + 1349827600 = 201924^2 + 36740^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658173865 + ... + 658173928.

Almost surely, 2^42123129376 is an apocalyptic number.

It is an amenable number.

42123129376 is a deficient number, since it is larger than the sum of its proper divisors (40806781646).

42123129376 is a wasteful number, since it uses less digits than its factorization.

42123129376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316347803 (or 1316347795 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The spelling of 42123129376 in words is "forty-two billion, one hundred twenty-three million, one hundred twenty-nine thousand, three hundred seventy-six".