402442344123 has 4 divisors (see below), whose sum is σ = 536589792168. Its totient is φ = 268294896080.

The previous prime is 402442344091. The next prime is 402442344151. The reversal of 402442344123 is 321443244204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402442344123 - 2⁵ = 402442344091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402442344163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67073724018 + ... + 67073724023.

It is an arithmetic number, because the mean of its divisors is an integer number (134147448042).

Almost surely, 2^402442344123 is an apocalyptic number.

402442344123 is a deficient number, since it is larger than the sum of its proper divisors (134147448045).

402442344123 is a wasteful number, since it uses less digits than its factorization.

402442344123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134147448044.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 402442344123 its reverse (321443244204), we get a palindrome (723885588327).

The spelling of 402442344123 in words is "four hundred two billion, four hundred forty-two million, three hundred forty-four thousand, one hundred twenty-three".