42601687 has 4 divisors (see below), whose sum is σ = 42626880. Its totient is φ = 42576496.

The previous prime is 42601679. The next prime is 42601703. The reversal of 42601687 is 78610624.

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

It is a cyclic number.

It is not a de Polignac number, because 42601687 - 2³ = 42601679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42601627) 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, 9862 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (10656720).

Almost surely, 2^42601687 is an apocalyptic number.

42601687 is a deficient number, since it is larger than the sum of its proper divisors (25193).

42601687 is a wasteful number, since it uses less digits than its factorization.

42601687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25192.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 42601687 is about 6526.9967825946. The cubic root of 42601687 is about 349.2547052422.

The spelling of 42601687 in words is "forty-two million, six hundred one thousand, six hundred eighty-seven".