42726920 has 32 divisors (see below), whose sum is σ = 98484120. Its totient is φ = 16673280.

The previous prime is 42726917. The next prime is 42726941. The reversal of 42726920 is 2962724.

It can be written as a sum of positive squares in 4 ways, for example, as 30713764 + 12013156 = 5542^2 + 3466^2 .

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

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, 11387 + ... + 14666.

Almost surely, 2^42726920 is an apocalyptic number.

42726920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42726920 is an abundant number, since it is smaller than the sum of its proper divisors (55757200).

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

42726920 is a wasteful number, since it uses less digits than its factorization.

42726920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26105 (or 26101 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 42726920 is about 6536.5832053145. The cubic root of 42726920 is about 349.5965964476.

The spelling of 42726920 in words is "forty-two million, seven hundred twenty-six thousand, nine hundred twenty".