42458831 has 2 divisors, whose sum is σ = 42458832. Its totient is φ = 42458830.

The previous prime is 42458827. The next prime is 42458833. The reversal of 42458831 is 13885424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42458831 - 2² = 42458827 is a prime.

It is a super-2 number, since 2×42458831² = 3605504659773122, which contains 22 as substring.

Together with 42458833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42458791 and 42458800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42458833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21229415 + 21229416.

It is an arithmetic number, because the mean of its divisors is an integer number (21229416).

Almost surely, 2^42458831 is an apocalyptic number.

42458831 is a deficient number, since it is larger than the sum of its proper divisors (1).

42458831 is an equidigital number, since it uses as much as digits as its factorization.

42458831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The square root of 42458831 is about 6516.0441220115. The cubic root of 42458831 is about 348.8638834492.

The spelling of 42458831 in words is "forty-two million, four hundred fifty-eight thousand, eight hundred thirty-one".