42156135164 has 48 divisors (see below), whose sum is σ = 91232292480. Its totient is φ = 16756943040.

The previous prime is 42156135139. The next prime is 42156135167. The reversal of 42156135164 is 46153165124.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156135167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1928594 + ... + 1950329.

It is an arithmetic number, because the mean of its divisors is an integer number (1900672760).

Almost surely, 2^42156135164 is an apocalyptic number.

42156135164 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42156135164 is an abundant number, since it is smaller than the sum of its proper divisors (49076157316).

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

42156135164 is a wasteful number, since it uses less digits than its factorization.

42156135164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878970 (or 3878968 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The spelling of 42156135164 in words is "forty-two billion, one hundred fifty-six million, one hundred thirty-five thousand, one hundred sixty-four".