13531994142 has 64 divisors (see below), whose sum is σ = 29157408000. Its totient is φ = 4174080768.

The previous prime is 13531994141. The next prime is 13531994149. The reversal of 13531994142 is 24149913531.

It is a super-2 number, since 2×13531994142² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531994094 and 13531994103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531994141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834084 + ... + 850152.

It is an arithmetic number, because the mean of its divisors is an integer number (455584500).

Almost surely, 2^13531994142 is an apocalyptic number.

13531994142 is an abundant number, since it is smaller than the sum of its proper divisors (15625413858).

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

13531994142 is a wasteful number, since it uses less digits than its factorization.

13531994142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16265.

The product of its digits is 116640, while the sum is 42.

The spelling of 13531994142 in words is "thirteen billion, five hundred thirty-one million, nine hundred ninety-four thousand, one hundred forty-two".