42270020 has 24 divisors (see below), whose sum is σ = 95595864. Its totient is φ = 15607296.

The previous prime is 42270017. The next prime is 42270031. The reversal of 42270020 is 2007224.

It can be written as a sum of positive squares in 4 ways, for example, as 719104 + 41550916 = 848^2 + 6446^2 .

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, 81029 + ... + 81548.

It is an arithmetic number, because the mean of its divisors is an integer number (3983161).

Almost surely, 2^42270020 is an apocalyptic number.

It is an amenable number.

42270020 is an abundant number, since it is smaller than the sum of its proper divisors (53325844).

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

42270020 is a wasteful number, since it uses less digits than its factorization.

42270020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162599 (or 162597 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 42270020 is about 6501.5398176124. The cubic root of 42270020 is about 348.3459918224.

Adding to 42270020 its reverse (2007224), we get a palindrome (44277244).

The spelling of 42270020 in words is "forty-two million, two hundred seventy thousand, twenty".