42544887 has 48 divisors (see below), whose sum is σ = 73084032. Its totient is φ = 21766080.

The previous prime is 42544883. The next prime is 42544891. The reversal of 42544887 is 78844524.

It is an interprime number because it is at equal distance from previous prime (42544883) and next prime (42544891).

It is not a de Polignac number, because 42544887 - 2² = 42544883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134053 + ... + 134369.

It is an arithmetic number, because the mean of its divisors is an integer number (1522584).

Almost surely, 2^42544887 is an apocalyptic number.

42544887 is a deficient number, since it is larger than the sum of its proper divisors (30539145).

42544887 is a wasteful number, since it uses less digits than its factorization.

42544887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 421 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 42544887 is about 6522.6441724196. The cubic root of 42544887 is about 349.0994180412.

The spelling of 42544887 in words is "forty-two million, five hundred forty-four thousand, eight hundred eighty-seven".