45130642 has 4 divisors (see below), whose sum is σ = 67695966. Its totient is φ = 22565320.

The previous prime is 45130619. The next prime is 45130661. The reversal of 45130642 is 24603154.

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

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 3798601 = 6429^2 + 1949^2 .

It is an unprimeable number.

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, 11282659 + ... + 11282662.

Almost surely, 2^45130642 is an apocalyptic number.

45130642 is a deficient number, since it is larger than the sum of its proper divisors (22565324).

45130642 is a wasteful number, since it uses less digits than its factorization.

45130642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22565323.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 45130642 is about 6717.9343551422. The cubic root of 45130642 is about 356.0332050415.

Adding to 45130642 its reverse (24603154), we get a palindrome (69733796).

The spelling of 45130642 in words is "forty-five million, one hundred thirty thousand, six hundred forty-two".