42270780 has 48 divisors (see below), whose sum is σ = 123508224. Its totient is φ = 10781760.

The previous prime is 42270779. The next prime is 42270793. The reversal of 42270780 is 8707224.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13936 + ... + 16695.

It is an arithmetic number, because the mean of its divisors is an integer number (2573088).

Almost surely, 2^42270780 is an apocalyptic number.

It is an amenable number.

42270780 is an abundant number, since it is smaller than the sum of its proper divisors (81237444).

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

42270780 is a wasteful number, since it uses less digits than its factorization.

42270780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30666 (or 30664 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 42270780 is about 6501.5982650422. The cubic root of 42270780 is about 348.3480795225.

The spelling of 42270780 in words is "forty-two million, two hundred seventy thousand, seven hundred eighty".