402240320342 has 8 divisors (see below), whose sum is σ = 689554834896. Its totient is φ = 172388708712.

The previous prime is 402240320299. The next prime is 402240320381. The reversal of 402240320342 is 243023042204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365725713 + ... + 14365725740.

It is an arithmetic number, because the mean of its divisors is an integer number (86194354362).

Almost surely, 2^402240320342 is an apocalyptic number.

402240320342 is a deficient number, since it is larger than the sum of its proper divisors (287314514554).

402240320342 is a wasteful number, since it uses less digits than its factorization.

402240320342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28731451462.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 402240320342 its reverse (243023042204), we get a palindrome (645263362546).

The spelling of 402240320342 in words is "four hundred two billion, two hundred forty million, three hundred twenty thousand, three hundred forty-two".