42715459 has 2 divisors, whose sum is σ = 42715460. Its totient is φ = 42715458.

The previous prime is 42715447. The next prime is 42715487. The reversal of 42715459 is 95451724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42715459 is a prime.

It is a super-2 number, since 2×42715459² = 3649220875161362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42715429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21357729 + 21357730.

It is an arithmetic number, because the mean of its divisors is an integer number (21357730).

Almost surely, 2^42715459 is an apocalyptic number.

42715459 is a deficient number, since it is larger than the sum of its proper divisors (1).

42715459 is an equidigital number, since it uses as much as digits as its factorization.

42715459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 42715459 is about 6535.7064652568. The cubic root of 42715459 is about 349.5653352435.

It can be divided in two parts, 4271 and 5459, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 42715459 in words is "forty-two million, seven hundred fifteen thousand, four hundred fifty-nine".