42637775 has 12 divisors (see below), whose sum is σ = 52954944. Its totient is φ = 34056000.

The previous prime is 42637769. The next prime is 42637781. The reversal of 42637775 is 57773624.

It is an interprime number because it is at equal distance from previous prime (42637769) and next prime (42637781).

It is not a de Polignac number, because 42637775 - 2⁶ = 42637711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23915 + ... + 25635.

It is an arithmetic number, because the mean of its divisors is an integer number (4412912).

Almost surely, 2^42637775 is an apocalyptic number.

42637775 is a deficient number, since it is larger than the sum of its proper divisors (10317169).

42637775 is a wasteful number, since it uses less digits than its factorization.

42637775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2717 counting only the distinct ones).

The product of its digits is 246960, while the sum is 41.

The square root of 42637775 is about 6529.7607153708. The cubic root of 42637775 is about 349.3532955988.

The spelling of 42637775 in words is "forty-two million, six hundred thirty-seven thousand, seven hundred seventy-five".