402344415642 has 16 divisors (see below), whose sum is σ = 866587972320. Its totient is φ = 123798281712.

The previous prime is 402344415631. The next prime is 402344415677. The reversal of 402344415642 is 246514443204.

It is a super-3 number, since 3×402344415642³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 402344415642.

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, 2579130792 + ... + 2579130947.

It is an arithmetic number, because the mean of its divisors is an integer number (54161748270).

Almost surely, 2^402344415642 is an apocalyptic number.

402344415642 is an abundant number, since it is smaller than the sum of its proper divisors (464243556678).

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

402344415642 is a wasteful number, since it uses less digits than its factorization.

402344415642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158261757.

The product of its (nonzero) digits is 368640, while the sum is 39.

Adding to 402344415642 its reverse (246514443204), we get a palindrome (648858858846).

The spelling of 402344415642 in words is "four hundred two billion, three hundred forty-four million, four hundred fifteen thousand, six hundred forty-two".