45042530 has 32 divisors (see below), whose sum is σ = 87668784. Its totient is φ = 16563456.

The previous prime is 45042511. The next prime is 45042541. The reversal of 45042530 is 3524054.

It can be written as a sum of positive squares in 8 ways, for example, as 13446889 + 31595641 = 3667^2 + 5621^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45042496 and 45042505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40664 + ... + 41756.

Almost surely, 2^45042530 is an apocalyptic number.

45042530 is a deficient number, since it is larger than the sum of its proper divisors (42626254).

45042530 is a wasteful number, since it uses less digits than its factorization.

45042530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 45042530 is about 6711.3731828889. The cubic root of 45042530 is about 355.8013504787.

Adding to 45042530 its reverse (3524054), we get a palindrome (48566584).

The spelling of 45042530 in words is "forty-five million, forty-two thousand, five hundred thirty".