402013342442 has 8 divisors (see below), whose sum is σ = 603073825956. Its totient is φ = 200988733792.

The previous prime is 402013342361. The next prime is 402013342453. The reversal of 402013342442 is 244243310204.

It can be written as a sum of positive squares in 2 ways, for example, as 339493840921 + 62519501521 = 582661^2 + 250039^2 .

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

It is a super-2 number, since 2×402013342442² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8940683 + ... + 8985534.

Almost surely, 2^402013342442 is an apocalyptic number.

402013342442 is a deficient number, since it is larger than the sum of its proper divisors (201060483514).

402013342442 is a wasteful number, since it uses less digits than its factorization.

402013342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17937432.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 402013342442 its reverse (244243310204), we get a palindrome (646256652646).

The spelling of 402013342442 in words is "four hundred two billion, thirteen million, three hundred forty-two thousand, four hundred forty-two".