442137402 has 24 divisors (see below), whose sum is σ = 1094816736. Its totient is φ = 126324936.

The previous prime is 442137389. The next prime is 442137427. The reversal of 442137402 is 204731244.

442137402 is a `hidden beast` number, since 44 + 213 + 7 + 402 = 666.

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 11 ways as a sum of consecutive naturals, for example, 1754388 + ... + 1754639.

It is an arithmetic number, because the mean of its divisors is an integer number (45617364).

Almost surely, 2^442137402 is an apocalyptic number.

442137402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

442137402 is an abundant number, since it is smaller than the sum of its proper divisors (652679334).

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

442137402 is a wasteful number, since it uses less digits than its factorization.

442137402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509042 (or 3509039 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 442137402 is about 21027.0635610396. The cubic root of 442137402 is about 761.8200848306.

Adding to 442137402 its reverse (204731244), we get a palindrome (646868646).

It can be divided in two parts, 44213 and 7402, that added together give a palindrome (51615).

The spelling of 442137402 in words is "four hundred forty-two million, one hundred thirty-seven thousand, four hundred two".