42531336 has 24 divisors (see below), whose sum is σ = 115189230. Its totient is φ = 14177088.

The previous prime is 42531319. The next prime is 42531337. The reversal of 42531336 is 63313524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39312900 + 3218436 = 6270^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×42531336³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42531337) 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, 295285 + ... + 295428.

Almost surely, 2^42531336 is an apocalyptic number.

It is an amenable number.

42531336 is an abundant number, since it is smaller than the sum of its proper divisors (72657894).

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

42531336 is a wasteful number, since it uses less digits than its factorization.

42531336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590725 (or 590718 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 42531336 is about 6521.6053238447. The cubic root of 42531336 is about 349.0623501435.

The spelling of 42531336 in words is "forty-two million, five hundred thirty-one thousand, three hundred thirty-six".