655131442 has 8 divisors (see below), whose sum is σ = 1123082496. Its totient is φ = 280770612.

The previous prime is 655131439. The next prime is 655131473. The reversal of 655131442 is 244131556.

It is a happy number.

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

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, 23397538 + ... + 23397565.

It is an arithmetic number, because the mean of its divisors is an integer number (140385312).

Almost surely, 2^655131442 is an apocalyptic number.

655131442 is a deficient number, since it is larger than the sum of its proper divisors (467951054).

655131442 is a wasteful number, since it uses less digits than its factorization.

655131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46795112.

The product of its digits is 14400, while the sum is 31.

The square root of 655131442 is about 25595.5355872855. The cubic root of 655131442 is about 868.5126487040.

Adding to 655131442 its reverse (244131556), we get a palindrome (899262998).

The spelling of 655131442 in words is "six hundred fifty-five million, one hundred thirty-one thousand, four hundred forty-two".