131204142 has 12 divisors (see below), whose sum is σ = 284275680. Its totient is φ = 43734708.

The previous prime is 131204111. The next prime is 131204173. The reversal of 131204142 is 241402131.

It is an interprime number because it is at equal distance from previous prime (131204111) and next prime (131204173).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7289119 = 131204142 / (1 + 3 + 1 + 2 + 0 + 4 + 1 + 4 + 2).

It is a congruent number.

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, 3644542 + ... + 3644577.

It is an arithmetic number, because the mean of its divisors is an integer number (23689640).

Almost surely, 2^131204142 is an apocalyptic number.

131204142 is an abundant number, since it is smaller than the sum of its proper divisors (153071538).

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

131204142 is a wasteful number, since it uses less digits than its factorization.

131204142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289127 (or 7289124 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131204142 is about 11454.4376553369. The cubic root of 131204142 is about 508.1389843330.

Adding to 131204142 its reverse (241402131), we get a palindrome (372606273).

The spelling of 131204142 in words is "one hundred thirty-one million, two hundred four thousand, one hundred forty-two".