123231043442 has 32 divisors (see below), whose sum is σ = 207907644672. Its totient is φ = 54354003264.

The previous prime is 123231043433. The next prime is 123231043451. The reversal of 123231043442 is 244340132321.

It is an interprime number because it is at equal distance from previous prime (123231043433) and next prime (123231043451).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575723 + ... + 760209.

It is an arithmetic number, because the mean of its divisors is an integer number (6497113896).

Almost surely, 2^123231043442 is an apocalyptic number.

123231043442 is a deficient number, since it is larger than the sum of its proper divisors (84676601230).

123231043442 is a wasteful number, since it uses less digits than its factorization.

123231043442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185642.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 123231043442 its reverse (244340132321), we get a palindrome (367571175763).

The spelling of 123231043442 in words is "one hundred twenty-three billion, two hundred thirty-one million, forty-three thousand, four hundred forty-two".