42331392 has 108 divisors (see below), whose sum is σ = 128608480. Its totient is φ = 13353984.

The previous prime is 42331391. The next prime is 42331427. The reversal of 42331392 is 29313324.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42331391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43293 + ... + 44259.

Almost surely, 2^42331392 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 42331392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64304240).

42331392 is an abundant number, since it is smaller than the sum of its proper divisors (86277088).

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

42331392 is a wasteful number, since it uses less digits than its factorization.

42331392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 991 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 42331392 is about 6506.2579106580. The cubic root of 42331392 is about 348.5144985793.

It can be divided in two parts, 4233 and 1392, that added together give a square (5625 = 75²).

The spelling of 42331392 in words is "forty-two million, three hundred thirty-one thousand, three hundred ninety-two".