42452445220 has 24 divisors (see below), whose sum is σ = 94394261304. Its totient is φ = 15982096896.

The previous prime is 42452445193. The next prime is 42452445229. The reversal of 42452445220 is 2254425424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17964577024 + 24487868196 = 134032^2 + 156486^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (42452445229) 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, 62429727 + ... + 62430406.

It is an arithmetic number, because the mean of its divisors is an integer number (3933094221).

Almost surely, 2^42452445220 is an apocalyptic number.

It is an amenable number.

42452445220 is an abundant number, since it is smaller than the sum of its proper divisors (51941816084).

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

42452445220 is a wasteful number, since it uses less digits than its factorization.

42452445220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124860159 (or 124860157 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 34.

The spelling of 42452445220 in words is "forty-two billion, four hundred fifty-two million, four hundred forty-five thousand, two hundred twenty".