42587420 has 12 divisors (see below), whose sum is σ = 89433624. Its totient is φ = 17034960.

The previous prime is 42587401. The next prime is 42587429. The reversal of 42587420 is 2478524.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42587429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064666 + ... + 1064705.

It is an arithmetic number, because the mean of its divisors is an integer number (7452802).

Almost surely, 2^42587420 is an apocalyptic number.

It is an amenable number.

42587420 is an abundant number, since it is smaller than the sum of its proper divisors (46846204).

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

42587420 is a wasteful number, since it uses less digits than its factorization.

42587420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129380 (or 2129378 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 42587420 is about 6525.9037688277. The cubic root of 42587420 is about 349.2157132556.

The spelling of 42587420 in words is "forty-two million, five hundred eighty-seven thousand, four hundred twenty".