42156850 has 12 divisors (see below), whose sum is σ = 78411834. Its totient is φ = 16862720.

The previous prime is 42156817. The next prime is 42156859. The reversal of 42156850 is 5865124.

It can be written as a sum of positive squares in 3 ways, for example, as 38031889 + 4124961 = 6167^2 + 2031^2 .

It is not an unprimeable number, because it can be changed into a prime (42156859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421519 + ... + 421618.

Almost surely, 2^42156850 is an apocalyptic number.

42156850 is a deficient number, since it is larger than the sum of its proper divisors (36254984).

42156850 is a wasteful number, since it uses less digits than its factorization.

42156850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843149 (or 843144 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 42156850 is about 6492.8306615836. The cubic root of 42156850 is about 348.0348370903.

The spelling of 42156850 in words is "forty-two million, one hundred fifty-six thousand, eight hundred fifty".