42031332 has 96 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 11771136.

The previous prime is 42031331. The next prime is 42031333. The reversal of 42031332 is 23313024.

It is an interprime number because it is at equal distance from previous prime (42031331) and next prime (42031333).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42031331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39544 + ... + 40592.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^42031332 is an apocalyptic number.

42031332 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42031332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

42031332 is an abundant number, since it is smaller than the sum of its proper divisors (84976668).

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

42031332 is a wasteful number, since it uses less digits than its factorization.

42031332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42031332 is about 6483.1575640270. The cubic root of 42031332 is about 347.6890801994.

Adding to 42031332 its reverse (23313024), we get a palindrome (65344356).

The spelling of 42031332 in words is "forty-two million, thirty-one thousand, three hundred thirty-two".