42587451 has 18 divisors (see below), whose sum is σ = 63887772. Its totient is φ = 28387260.

The previous prime is 42587443. The next prime is 42587471. The reversal of 42587451 is 15478524.

It is not a de Polignac number, because 42587451 - 2³ = 42587443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42587401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3316 + ... + 9806.

Almost surely, 2^42587451 is an apocalyptic number.

42587451 is a deficient number, since it is larger than the sum of its proper divisors (21300321).

42587451 is an frugal number, since it uses more digits than its factorization.

42587451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515 (or 6494 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 42587451 is about 6525.9061439772. The cubic root of 42587451 is about 349.2157979886.

The spelling of 42587451 in words is "forty-two million, five hundred eighty-seven thousand, four hundred fifty-one".