45742081 has 16 divisors (see below), whose sum is σ = 58871808. Its totient is φ = 34491600.

The previous prime is 45742069. The next prime is 45742097. The reversal of 45742081 is 18024754.

45742081 = 83² + 84² + ... + 516².

It is not a de Polignac number, because 45742081 - 2²¹ = 43644929 is a prime.

It is a super-2 number, since 2×45742081² = 4184675948421122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45742031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7195 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (3679488).

Almost surely, 2^45742081 is an apocalyptic number.

It is an amenable number.

45742081 is a deficient number, since it is larger than the sum of its proper divisors (13129727).

45742081 is a wasteful number, since it uses less digits than its factorization.

45742081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 45742081 is about 6763.2892145760. The cubic root of 45742081 is about 357.6338677433.

The spelling of 45742081 in words is "forty-five million, seven hundred forty-two thousand, eighty-one".