45131442 has 16 divisors (see below), whose sum is σ = 90408960. Its totient is φ = 15019472.

The previous prime is 45131431. The next prime is 45131473. The reversal of 45131442 is 24413154.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842 + ... + 9677.

It is an arithmetic number, because the mean of its divisors is an integer number (5650560).

Almost surely, 2^45131442 is an apocalyptic number.

45131442 is an abundant number, since it is smaller than the sum of its proper divisors (45277518).

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

45131442 is a wasteful number, since it uses less digits than its factorization.

45131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12177.

The product of its digits is 1920, while the sum is 24.

The square root of 45131442 is about 6717.9938969904. The cubic root of 45131442 is about 356.0353087480.

Adding to 45131442 its reverse (24413154), we get a palindrome (69544596).

The spelling of 45131442 in words is "forty-five million, one hundred thirty-one thousand, four hundred forty-two".