42615827 has 2 divisors, whose sum is σ = 42615828. Its totient is φ = 42615826.

The previous prime is 42615791. The next prime is 42615829. The reversal of 42615827 is 72851624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42615827 - 2¹⁸ = 42353683 is a prime.

It is a super-2 number, since 2×42615827² = 3632217421787858, which contains 22 as substring.

Together with 42615829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42615829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21307913 + 21307914.

It is an arithmetic number, because the mean of its divisors is an integer number (21307914).

Almost surely, 2^42615827 is an apocalyptic number.

42615827 is a deficient number, since it is larger than the sum of its proper divisors (1).

42615827 is an equidigital number, since it uses as much as digits as its factorization.

42615827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 42615827 is about 6528.0798861534. The cubic root of 42615827 is about 349.2933415467.

The spelling of 42615827 in words is "forty-two million, six hundred fifteen thousand, eight hundred twenty-seven".