42353491 has 2 divisors, whose sum is σ = 42353492. Its totient is φ = 42353490.

The previous prime is 42353483. The next prime is 42353501. The reversal of 42353491 is 19435324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42353491 - 2³ = 42353483 is a prime.

It is not a weakly prime, because it can be changed into another prime (42353411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21176745 + 21176746.

It is an arithmetic number, because the mean of its divisors is an integer number (21176746).

Almost surely, 2^42353491 is an apocalyptic number.

42353491 is a deficient number, since it is larger than the sum of its proper divisors (1).

42353491 is an equidigital number, since it uses as much as digits as its factorization.

42353491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 42353491 is about 6507.9559771099. The cubic root of 42353491 is about 348.5751350769.

The spelling of 42353491 in words is "forty-two million, three hundred fifty-three thousand, four hundred ninety-one".