131401242 has 48 divisors (see below), whose sum is σ = 332030400. Its totient is φ = 37541448.

The previous prime is 131401229. The next prime is 131401267. The reversal of 131401242 is 242104131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4468 + ... + 16815.

It is an arithmetic number, because the mean of its divisors is an integer number (6917300).

Almost surely, 2^131401242 is an apocalyptic number.

131401242 is an abundant number, since it is smaller than the sum of its proper divisors (200629158).

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

131401242 is a wasteful number, since it uses less digits than its factorization.

131401242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312 (or 21295 counting only the distinct ones).

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

The square root of 131401242 is about 11463.0380789737. The cubic root of 131401242 is about 508.3933057852.

Adding to 131401242 its reverse (242104131), we get a palindrome (373505373).

The spelling of 131401242 in words is "one hundred thirty-one million, four hundred one thousand, two hundred forty-two".