123042335394 has 64 divisors (see below), whose sum is σ = 273686335488. Its totient is φ = 36559972800.

The previous prime is 123042335333. The next prime is 123042335401. The reversal of 123042335394 is 493533240321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6325167 + ... + 6344589.

It is an arithmetic number, because the mean of its divisors is an integer number (4276348992).

Almost surely, 2^123042335394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123042335394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136843167744).

123042335394 is an abundant number, since it is smaller than the sum of its proper divisors (150644000094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123042335394 is a wasteful number, since it uses less digits than its factorization.

123042335394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21303.

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 123042335394 in words is "one hundred twenty-three billion, forty-two million, three hundred thirty-five thousand, three hundred ninety-four".