42246440 has 16 divisors (see below), whose sum is σ = 95054580. Its totient is φ = 16898560.

The previous prime is 42246437. The next prime is 42246473. The reversal of 42246440 is 4464224.

It can be written as a sum of positive squares in 2 ways, for example, as 41396356 + 850084 = 6434^2 + 922^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528041 + ... + 528120.

Almost surely, 2^42246440 is an apocalyptic number.

42246440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42246440 is an abundant number, since it is smaller than the sum of its proper divisors (52808140).

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

42246440 is a wasteful number, since it uses less digits than its factorization.

42246440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056172 (or 1056168 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 42246440 is about 6499.7261480773. The cubic root of 42246440 is about 348.2812057453.

The spelling of 42246440 in words is "forty-two million, two hundred forty-six thousand, four hundred forty".