45728042 has 4 divisors (see below), whose sum is σ = 68592066. Its totient is φ = 22864020.

The previous prime is 45727999. The next prime is 45728077. The reversal of 45728042 is 24082754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24082754 = 2 ⋅12041377.

It can be written as a sum of positive squares in only one way, i.e., 34445161 + 11282881 = 5869^2 + 3359^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11432009 + ... + 11432012.

Almost surely, 2^45728042 is an apocalyptic number.

45728042 is a deficient number, since it is larger than the sum of its proper divisors (22864024).

45728042 is a wasteful number, since it uses less digits than its factorization.

45728042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22864023.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 45728042 is about 6762.2512523567. The cubic root of 45728042 is about 357.5972760863.

The spelling of 45728042 in words is "forty-five million, seven hundred twenty-eight thousand, forty-two".