42634519 has 2 divisors, whose sum is σ = 42634520. Its totient is φ = 42634518.

The previous prime is 42634513. The next prime is 42634523. The reversal of 42634519 is 91543624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42634519 - 2³ = 42634511 is a prime.

It is a super-2 number, since 2×42634519² = 3635404420722722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42634511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21317259 + 21317260.

It is an arithmetic number, because the mean of its divisors is an integer number (21317260).

Almost surely, 2^42634519 is an apocalyptic number.

42634519 is a deficient number, since it is larger than the sum of its proper divisors (1).

42634519 is an equidigital number, since it uses as much as digits as its factorization.

42634519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 42634519 is about 6529.5113906019. The cubic root of 42634519 is about 349.3444026763.

The spelling of 42634519 in words is "forty-two million, six hundred thirty-four thousand, five hundred nineteen".