131400642 has 8 divisors (see below), whose sum is σ = 262801296. Its totient is φ = 43800212.

The previous prime is 131400641. The next prime is 131400683. The reversal of 131400642 is 246004131.

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

131400642 is an admirable number.

It is a super-2 number, since 2×131400642² = 34532257436024328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131400641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10950048 + ... + 10950059.

It is an arithmetic number, because the mean of its divisors is an integer number (32850162).

Almost surely, 2^131400642 is an apocalyptic number.

131400642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131400642 is a wasteful number, since it uses less digits than its factorization.

131400642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21900112.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 131400642 is about 11463.0119078713. The cubic root of 131400642 is about 508.3925319811.

Adding to 131400642 its reverse (246004131), we get a palindrome (377404773).

The spelling of 131400642 in words is "one hundred thirty-one million, four hundred thousand, six hundred forty-two".