42456499 has 4 divisors (see below), whose sum is σ = 42534664. Its totient is φ = 42378336.

The previous prime is 42456487. The next prime is 42456503. The reversal of 42456499 is 99465424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42456499 - 2⁵ = 42456467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42456439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38262 + ... + 39355.

It is an arithmetic number, because the mean of its divisors is an integer number (10633666).

Almost surely, 2^42456499 is an apocalyptic number.

42456499 is a deficient number, since it is larger than the sum of its proper divisors (78165).

42456499 is an equidigital number, since it uses as much as digits as its factorization.

42456499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78164.

The product of its digits is 311040, while the sum is 43.

The square root of 42456499 is about 6515.8651766285. The cubic root of 42456499 is about 348.8574963565.

The spelling of 42456499 in words is "forty-two million, four hundred fifty-six thousand, four hundred ninety-nine".