42587240 has 16 divisors (see below), whose sum is σ = 95821380. Its totient is φ = 17034880.

The previous prime is 42587239. The next prime is 42587267. The reversal of 42587240 is 4278524.

It can be written as a sum of positive squares in 2 ways, for example, as 41550916 + 1036324 = 6446^2 + 1018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42587197 and 42587206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532301 + ... + 532380.

Almost surely, 2^42587240 is an apocalyptic number.

42587240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42587240 is an abundant number, since it is smaller than the sum of its proper divisors (53234140).

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

42587240 is a wasteful number, since it uses less digits than its factorization.

42587240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064692 (or 1064688 counting only the distinct ones).

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

The square root of 42587240 is about 6525.8899776199. The cubic root of 42587240 is about 349.2152212565.

The spelling of 42587240 in words is "forty-two million, five hundred eighty-seven thousand, two hundred forty".