42312660 has 96 divisors (see below), whose sum is σ = 135136512. Its totient is φ = 9799680.

The previous prime is 42312659. The next prime is 42312671. The reversal of 42312660 is 6621324.

It is a super-2 number, since 2×42312660² = 3580722392551200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42312660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11665 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (1407672).

Almost surely, 2^42312660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42312660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67568256).

42312660 is an abundant number, since it is smaller than the sum of its proper divisors (92823852).

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

42312660 is a wasteful number, since it uses less digits than its factorization.

42312660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233 (or 3231 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42312660 is about 6504.8182142163. The cubic root of 42312660 is about 348.4630841209.

Adding to 42312660 its reverse (6621324), we get a palindrome (48933984).

The spelling of 42312660 in words is "forty-two million, three hundred twelve thousand, six hundred sixty".