42631501 has 4 divisors (see below), whose sum is σ = 46507104. Its totient is φ = 38755900.

The previous prime is 42631499. The next prime is 42631507. The reversal of 42631501 is 10513624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42631501 - 2¹ = 42631499 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 (42631507) 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, 1937785 + ... + 1937806.

It is an arithmetic number, because the mean of its divisors is an integer number (11626776).

Almost surely, 2^42631501 is an apocalyptic number.

It is an amenable number.

42631501 is a deficient number, since it is larger than the sum of its proper divisors (3875603).

42631501 is a wasteful number, since it uses less digits than its factorization.

42631501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875602.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42631501 is about 6529.2802819300. The cubic root of 42631501 is about 349.3361593849.

The spelling of 42631501 in words is "forty-two million, six hundred thirty-one thousand, five hundred one".