45020142 has 12 divisors (see below), whose sum is σ = 97543680. Its totient is φ = 15006708.

The previous prime is 45020123. The next prime is 45020149. The reversal of 45020142 is 24102054.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2501119 = 45020142 / (4 + 5 + 0 + 2 + 0 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45020149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1250542 + ... + 1250577.

It is an arithmetic number, because the mean of its divisors is an integer number (8128640).

Almost surely, 2^45020142 is an apocalyptic number.

45020142 is an abundant number, since it is smaller than the sum of its proper divisors (52523538).

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

45020142 is a wasteful number, since it uses less digits than its factorization.

45020142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501127 (or 2501124 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 45020142 is about 6709.7050605820. The cubic root of 45020142 is about 355.7423913812.

Adding to 45020142 its reverse (24102054), we get a palindrome (69122196).

The spelling of 45020142 in words is "forty-five million, twenty thousand, one hundred forty-two".