3781685142942 has 64 divisors (see below), whose sum is σ = 8877935646720. Its totient is φ = 1051224051456.

The previous prime is 3781685142929. The next prime is 3781685143003. The reversal of 3781685142942 is 2492415861873.

It is a super-2 number, since 2×3781685142942² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36123298 + ... + 36227834.

It is an arithmetic number, because the mean of its divisors is an integer number (138717744480).

Almost surely, 2^{3781685142942} is an apocalyptic number.

3781685142942 is an abundant number, since it is smaller than the sum of its proper divisors (5096250503778).

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

3781685142942 is a wasteful number, since it uses less digits than its factorization.

3781685142942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127865.

The product of its digits is 23224320, while the sum is 60.

The spelling of 3781685142942 in words is "three trillion, seven hundred eighty-one billion, six hundred eighty-five million, one hundred forty-two thousand, nine hundred forty-two".