123451022042 has 16 divisors (see below), whose sum is σ = 196156961280. Its totient is φ = 58068616128.

The previous prime is 123451022039. The next prime is 123451022063. The reversal of 123451022042 is 240220154321.

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 in 7 ways as a sum of consecutive naturals, for example, 734708 + ... + 886959.

It is an arithmetic number, because the mean of its divisors is an integer number (12259810080).

Almost surely, 2^123451022042 is an apocalyptic number.

123451022042 is a deficient number, since it is larger than the sum of its proper divisors (72705939238).

123451022042 is a wasteful number, since it uses less digits than its factorization.

123451022042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623925.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 123451022042 its reverse (240220154321), we get a palindrome (363671176363).

The spelling of 123451022042 in words is "one hundred twenty-three billion, four hundred fifty-one million, twenty-two thousand, forty-two".