42580739 has 2 divisors, whose sum is σ = 42580740. Its totient is φ = 42580738.

The previous prime is 42580723. The next prime is 42580771. The reversal of 42580739 is 93708524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42580739 - 2⁴ = 42580723 is a prime.

It is a super-2 number, since 2×42580739² = 3626238667572242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42580039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21290369 + 21290370.

It is an arithmetic number, because the mean of its divisors is an integer number (21290370).

Almost surely, 2^42580739 is an apocalyptic number.

42580739 is a deficient number, since it is larger than the sum of its proper divisors (1).

42580739 is an equidigital number, since it uses as much as digits as its factorization.

42580739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 42580739 is about 6525.3918656277. The cubic root of 42580739 is about 349.1974509597.

The spelling of 42580739 in words is "forty-two million, five hundred eighty thousand, seven hundred thirty-nine".