42631349 has 4 divisors (see below), whose sum is σ = 43671180. Its totient is φ = 41591520.

The previous prime is 42631339. The next prime is 42631387. The reversal of 42631349 is 94313624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5640625 + 36990724 = 2375^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 42631349 - 2⁴ = 42631333 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 (42631339) 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, 519854 + ... + 519935.

It is an arithmetic number, because the mean of its divisors is an integer number (10917795).

Almost surely, 2^42631349 is an apocalyptic number.

It is an amenable number.

42631349 is a deficient number, since it is larger than the sum of its proper divisors (1039831).

42631349 is a wasteful number, since it uses less digits than its factorization.

42631349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039830.

The product of its digits is 15552, while the sum is 32.

The square root of 42631349 is about 6529.2686420456. The cubic root of 42631349 is about 349.3357442056.

The spelling of 42631349 in words is "forty-two million, six hundred thirty-one thousand, three hundred forty-nine".