42142513931 has 16 divisors (see below), whose sum is σ = 52067976960. Its totient is φ = 33296093280.

The previous prime is 42142513921. The next prime is 42142513937. The reversal of 42142513931 is 13931524124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42142513931 - 2¹⁴ = 42142497547 is a prime.

It is a super-2 number, since 2×42142513931² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42142513891 and 42142513900.

It is not an unprimeable number, because it can be changed into a prime (42142513937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4276985 + ... + 4286826.

It is an arithmetic number, because the mean of its divisors is an integer number (3254248560).

Almost surely, 2^42142513931 is an apocalyptic number.

42142513931 is a deficient number, since it is larger than the sum of its proper divisors (9925463029).

42142513931 is a wasteful number, since it uses less digits than its factorization.

42142513931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563874.

The product of its digits is 25920, while the sum is 35.

The spelling of 42142513931 in words is "forty-two billion, one hundred forty-two million, five hundred thirteen thousand, nine hundred thirty-one".