42540336 has 40 divisors (see below), whose sum is σ = 122107760. Its totient is φ = 14179968.

The previous prime is 42540331. The next prime is 42540349. The reversal of 42540336 is 63304524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48805 + ... + 49668.

It is an arithmetic number, because the mean of its divisors is an integer number (3052694).

Almost surely, 2^42540336 is an apocalyptic number.

It is an amenable number.

42540336 is an abundant number, since it is smaller than the sum of its proper divisors (79567424).

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

42540336 is a wasteful number, since it uses less digits than its factorization.

42540336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98490 (or 98478 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 42540336 is about 6522.2953015024. The cubic root of 42540336 is about 349.0869699484.

The spelling of 42540336 in words is "forty-two million, five hundred forty thousand, three hundred thirty-six".