45122020 has 24 divisors (see below), whose sum is σ = 96364800. Its totient is φ = 17742432.

The previous prime is 45122009. The next prime is 45122023. The reversal of 45122020 is 2022154.

It is a junction number, because it is equal to n+sod(n) for n = 45121985 and 45122003.

It is not an unprimeable number, because it can be changed into a prime (45122023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17940 + ... + 20299.

It is an arithmetic number, because the mean of its divisors is an integer number (4015200).

Almost surely, 2^45122020 is an apocalyptic number.

It is an amenable number.

45122020 is an abundant number, since it is smaller than the sum of its proper divisors (51242780).

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

45122020 is a wasteful number, since it uses less digits than its factorization.

45122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38307 (or 38305 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 45122020 is about 6717.2926093777. The cubic root of 45122020 is about 356.0105307662.

Adding to 45122020 its reverse (2022154), we get a palindrome (47144174).

The spelling of 45122020 in words is "forty-five million, one hundred twenty-two thousand, twenty".