45742087 has 4 divisors (see below), whose sum is σ = 48432816. Its totient is φ = 43051360.

The previous prime is 45742069. The next prime is 45742097. The reversal of 45742087 is 78024754.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45742087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45742007) 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, 1345339 + ... + 1345372.

It is an arithmetic number, because the mean of its divisors is an integer number (12108204).

Almost surely, 2^45742087 is an apocalyptic number.

45742087 is a deficient number, since it is larger than the sum of its proper divisors (2690729).

45742087 is a wasteful number, since it uses less digits than its factorization.

45742087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690728.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 45742087 is about 6763.2896581471. The cubic root of 45742087 is about 357.6338833802.

The spelling of 45742087 in words is "forty-five million, seven hundred forty-two thousand, eighty-seven".