42613440 has 56 divisors (see below), whose sum is σ = 135300720. Its totient is φ = 11363328.

The previous prime is 42613433. The next prime is 42613451. The reversal of 42613440 is 4431624.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42613440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21235 + ... + 23154.

Almost surely, 2^42613440 is an apocalyptic number.

42613440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42613440 is an abundant number, since it is smaller than the sum of its proper divisors (92687280).

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

42613440 is a wasteful number, since it uses less digits than its factorization.

42613440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44409 (or 44399 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42613440 is about 6527.8970580119. The cubic root of 42613440 is about 349.2868198791.

The spelling of 42613440 in words is "forty-two million, six hundred thirteen thousand, four hundred forty".