42565280 has 48 divisors (see below), whose sum is σ = 106482600. Its totient is φ = 16023552.

The previous prime is 42565253. The next prime is 42565283. The reversal of 42565280 is 8256524.

It can be written as a sum of positive squares in 4 ways, for example, as 32855824 + 9709456 = 5732^2 + 3116^2 .

It is a super-2 number, since 2×42565280² = 3623606122956800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (42565283) 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, 5105 + ... + 10544.

Almost surely, 2^42565280 is an apocalyptic number.

42565280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42565280 is an abundant number, since it is smaller than the sum of its proper divisors (63917320).

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

42565280 is a wasteful number, since it uses less digits than its factorization.

42565280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15681 (or 15673 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 42565280 is about 6524.2072315340. The cubic root of 42565280 is about 349.1551869617.

The spelling of 42565280 in words is "forty-two million, five hundred sixty-five thousand, two hundred eighty".