399904442100142 has 16 divisors (see below), whose sum is σ = 685550731668192. Its totient is φ = 171387553168800.

The previous prime is 399904442100113. The next prime is 399904442100169. The reversal of 399904442100142 is 241001244409993.

It is a happy number.

It is a super-2 number, since 2×399904442100142² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 399904442100142.

It is a congruent number.

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, 61184392 + ... + 67404292.

It is an arithmetic number, because the mean of its divisors is an integer number (42846920729262).

Almost surely, 2^{399904442100142} is an apocalyptic number.

399904442100142 is a deficient number, since it is larger than the sum of its proper divisors (285646289568050).

399904442100142 is a wasteful number, since it uses less digits than its factorization.

399904442100142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812363.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 399904442100142 in words is "three hundred ninety-nine trillion, nine hundred four billion, four hundred forty-two million, one hundred thousand, one hundred forty-two".