42631519 has 6 divisors (see below), whose sum is σ = 49591824. Its totient is φ = 36541260.

The previous prime is 42631507. The next prime is 42631531. The reversal of 42631519 is 91513624.

It is an interprime number because it is at equal distance from previous prime (42631507) and next prime (42631531).

It is not a de Polignac number, because 42631519 - 2²³ = 34242911 is a prime.

It is a super-2 number, since 2×42631519² = 3634892824494722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42632519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 434967 + ... + 435064.

It is an arithmetic number, because the mean of its divisors is an integer number (8265304).

Almost surely, 2^42631519 is an apocalyptic number.

42631519 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42631519 is a deficient number, since it is larger than the sum of its proper divisors (6960305).

42631519 is an equidigital number, since it uses as much as digits as its factorization.

42631519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870045 (or 870038 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 42631519 is about 6529.2816603360. The cubic root of 42631519 is about 349.3362085508.

The spelling of 42631519 in words is "forty-two million, six hundred thirty-one thousand, five hundred nineteen".