123722867042 has 16 divisors (see below), whose sum is σ = 188697210552. Its totient is φ = 60824555520.

The previous prime is 123722867033. The next prime is 123722867057. The reversal of 123722867042 is 240768227321.

It can be written as a sum of positive squares in 4 ways, for example, as 89855458081 + 33867408961 = 299759^2 + 184031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123722866984 and 123722867002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140258 + ... + 516834.

Almost surely, 2^123722867042 is an apocalyptic number.

123722867042 is a deficient number, since it is larger than the sum of its proper divisors (64974343510).

123722867042 is a wasteful number, since it uses less digits than its factorization.

123722867042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379333.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 123722867042 in words is "one hundred twenty-three billion, seven hundred twenty-two million, eight hundred sixty-seven thousand, forty-two".