32131242 has 160 divisors (see below), whose sum is σ = 90256320. Its totient is φ = 8398080.

The previous prime is 32131237. The next prime is 32131247. The reversal of 32131242 is 24213123.

It is an interprime number because it is at equal distance from previous prime (32131237) and next prime (32131247).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131247) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 440118 + ... + 440190.

It is an arithmetic number, because the mean of its divisors is an integer number (564102).

Almost surely, 2^32131242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32131242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45128160).

32131242 is an abundant number, since it is smaller than the sum of its proper divisors (58125078).

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

32131242 is a wasteful number, since it uses less digits than its factorization.

32131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 121 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 32131242 is about 5668.4426432663. The cubic root of 32131242 is about 317.9136468982.

Adding to 32131242 its reverse (24213123), we get a palindrome (56344365).

The spelling of 32131242 in words is "thirty-two million, one hundred thirty-one thousand, two hundred forty-two".