45666442 has 4 divisors (see below), whose sum is σ = 68499666. Its totient is φ = 22833220.

The previous prime is 45666421. The next prime is 45666449. The reversal of 45666442 is 24466654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24466654 = 2 ⋅12233327.

It can be written as a sum of positive squares in only one way, i.e., 44076321 + 1590121 = 6639^2 + 1261^2 .

It is not an unprimeable number, because it can be changed into a prime (45666449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11416609 + ... + 11416612.

Almost surely, 2^45666442 is an apocalyptic number.

45666442 is a deficient number, since it is larger than the sum of its proper divisors (22833224).

45666442 is a wasteful number, since it uses less digits than its factorization.

45666442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22833223.

The product of its digits is 138240, while the sum is 37.

The square root of 45666442 is about 6757.6950212332. The cubic root of 45666442 is about 357.4366314729.

The spelling of 45666442 in words is "forty-five million, six hundred sixty-six thousand, four hundred forty-two".