132991442 has 12 divisors (see below), whose sum is σ = 211912890. Its totient is φ = 62583936.

The previous prime is 132991381. The next prime is 132991489. The reversal of 132991442 is 244199231.

It can be written as a sum of positive squares in 3 ways, for example, as 110229001 + 22762441 = 10499^2 + 4771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114467 + ... + 115622.

Almost surely, 2^132991442 is an apocalyptic number.

132991442 is a deficient number, since it is larger than the sum of its proper divisors (78921448).

132991442 is a wasteful number, since it uses less digits than its factorization.

132991442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230125 (or 230108 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 132991442 is about 11532.1915523460. The cubic root of 132991442 is about 510.4359235835.

It can be divided in two parts, 13299 and 1442, that added together give a palindrome (14741).

The spelling of 132991442 in words is "one hundred thirty-two million, nine hundred ninety-one thousand, four hundred forty-two".