42723202820 has 12 divisors (see below), whose sum is σ = 89718725964. Its totient is φ = 17089281120.

The previous prime is 42723202813. The next prime is 42723202829. The reversal of 42723202820 is 2820232724.

It can be written as a sum of positive squares in 2 ways, for example, as 27843594496 + 14879608324 = 166864^2 + 121982^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42723202829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068080051 + ... + 1068080090.

It is an arithmetic number, because the mean of its divisors is an integer number (7476560497).

Almost surely, 2^42723202820 is an apocalyptic number.

It is an amenable number.

42723202820 is an abundant number, since it is smaller than the sum of its proper divisors (46995523144).

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

42723202820 is a wasteful number, since it uses less digits than its factorization.

42723202820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136160150 (or 2136160148 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 42723202820 in words is "forty-two billion, seven hundred twenty-three million, two hundred two thousand, eight hundred twenty".