42640260 has 48 divisors (see below), whose sum is σ = 128579136. Its totient is φ = 10495872.

The previous prime is 42640231. The next prime is 42640271. The reversal of 42640260 is 6204624.

It is a self number, because there is not a number n which added to its sum of digits gives 42640260.

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, 26554 + ... + 28113.

It is an arithmetic number, because the mean of its divisors is an integer number (2678732).

Almost surely, 2^42640260 is an apocalyptic number.

It is an amenable number.

42640260 is an abundant number, since it is smaller than the sum of its proper divisors (85938876).

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

42640260 is a wasteful number, since it uses less digits than its factorization.

42640260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54692 (or 54690 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42640260 is about 6529.9509952219. The cubic root of 42640260 is about 349.3600824294.

Adding to 42640260 its reverse (6204624), we get a palindrome (48844884).

The spelling of 42640260 in words is "forty-two million, six hundred forty thousand, two hundred sixty".