42064459 has 2 divisors, whose sum is σ = 42064460. Its totient is φ = 42064458.

The previous prime is 42064453. The next prime is 42064481. The reversal of 42064459 is 95446024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42064459 - 2⁷ = 42064331 is a prime.

It is not a weakly prime, because it can be changed into another prime (42064453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21032229 + 21032230.

It is an arithmetic number, because the mean of its divisors is an integer number (21032230).

Almost surely, 2^42064459 is an apocalyptic number.

42064459 is a deficient number, since it is larger than the sum of its proper divisors (1).

42064459 is an equidigital number, since it uses as much as digits as its factorization.

42064459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 42064459 is about 6485.7119115792. The cubic root of 42064459 is about 347.7803999442.

The spelling of 42064459 in words is "forty-two million, sixty-four thousand, four hundred fifty-nine".