131204242 has 32 divisors (see below), whose sum is σ = 216393408. Its totient is φ = 59299776.

The previous prime is 131204221. The next prime is 131204251. The reversal of 131204242 is 242402131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351568 + ... + 351940.

It is an arithmetic number, because the mean of its divisors is an integer number (6762294).

Almost surely, 2^131204242 is an apocalyptic number.

131204242 is a deficient number, since it is larger than the sum of its proper divisors (85189166).

131204242 is a wasteful number, since it uses less digits than its factorization.

131204242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 131204242 is about 11454.4420204565. The cubic root of 131204242 is about 508.1391134293.

Adding to 131204242 its reverse (242402131), we get a palindrome (373606373).

The spelling of 131204242 in words is "one hundred thirty-one million, two hundred four thousand, two hundred forty-two".