45042030 has 48 divisors (see below), whose sum is σ = 127758384. Its totient is φ = 10919040.

The previous prime is 45042007. The next prime is 45042059. The reversal of 45042030 is 3024054.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 45041994 and 45042012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21759 + ... + 23738.

It is an arithmetic number, because the mean of its divisors is an integer number (2661633).

Almost surely, 2^45042030 is an apocalyptic number.

45042030 is an abundant number, since it is smaller than the sum of its proper divisors (82716354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45042030 is a wasteful number, since it uses less digits than its factorization.

45042030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45521 (or 45518 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 45042030 is about 6711.3359325845. The cubic root of 45042030 is about 355.8000339354.

Adding to 45042030 its reverse (3024054), we get a palindrome (48066084).

The spelling of 45042030 in words is "forty-five million, forty-two thousand, thirty".