42653587 has 4 divisors (see below), whose sum is σ = 42776856. Its totient is φ = 42530320.

The previous prime is 42653557. The next prime is 42653593. The reversal of 42653587 is 78535624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42653587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42653557) 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, 61114 + ... + 61807.

It is an arithmetic number, because the mean of its divisors is an integer number (10694214).

Almost surely, 2^42653587 is an apocalyptic number.

42653587 is a deficient number, since it is larger than the sum of its proper divisors (123269).

42653587 is a wasteful number, since it uses less digits than its factorization.

42653587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123268.

The product of its digits is 201600, while the sum is 40.

The square root of 42653587 is about 6530.9713672623. The cubic root of 42653587 is about 349.3964755537.

The spelling of 42653587 in words is "forty-two million, six hundred fifty-three thousand, five hundred eighty-seven".