45120542 has 4 divisors (see below), whose sum is σ = 67680816. Its totient is φ = 22560270.

The previous prime is 45120527. The next prime is 45120587. The reversal of 45120542 is 24502154.

It is a happy number.

45120542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24502154 = 2 ⋅12251077.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280134 + ... + 11280137.

It is an arithmetic number, because the mean of its divisors is an integer number (16920204).

Almost surely, 2^45120542 is an apocalyptic number.

45120542 is a deficient number, since it is larger than the sum of its proper divisors (22560274).

45120542 is a wasteful number, since it uses less digits than its factorization.

45120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22560273.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45120542 is about 6717.1825939154. The cubic root of 45120542 is about 356.0066436079.

Adding to 45120542 its reverse (24502154), we get a palindrome (69622696).

The spelling of 45120542 in words is "forty-five million, one hundred twenty thousand, five hundred forty-two".