42657607 has 4 divisors (see below), whose sum is σ = 45166896. Its totient is φ = 40148320.

The previous prime is 42657599. The next prime is 42657647. The reversal of 42657607 is 70675624.

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 42657607 - 2³ = 42657599 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 (42657647) 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, 1254619 + ... + 1254652.

It is an arithmetic number, because the mean of its divisors is an integer number (11291724).

Almost surely, 2^42657607 is an apocalyptic number.

42657607 is a deficient number, since it is larger than the sum of its proper divisors (2509289).

42657607 is a wasteful number, since it uses less digits than its factorization.

42657607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509288.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 42657607 is about 6531.2791243370. The cubic root of 42657607 is about 349.4074518069.

It can be divided in two parts, 42657 and 607, that added together give a square (43264 = 208²).

The spelling of 42657607 in words is "forty-two million, six hundred fifty-seven thousand, six hundred seven".