131445542 has 8 divisors (see below), whose sum is σ = 198030000. Its totient is φ = 65435544.

The previous prime is 131445473. The next prime is 131445563. The reversal of 131445542 is 245544131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143042 + ... + 143957.

It is an arithmetic number, because the mean of its divisors is an integer number (24753750).

Almost surely, 2^131445542 is an apocalyptic number.

131445542 is a deficient number, since it is larger than the sum of its proper divisors (66584458).

131445542 is a wasteful number, since it uses less digits than its factorization.

131445542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287230.

The product of its digits is 9600, while the sum is 29.

The square root of 131445542 is about 11464.9702136552. The cubic root of 131445542 is about 508.4504318128.

Adding to 131445542 its reverse (245544131), we get a palindrome (376989673).

The spelling of 131445542 in words is "one hundred thirty-one million, four hundred forty-five thousand, five hundred forty-two".