131642460 has 72 divisors (see below), whose sum is σ = 406879200. Its totient is φ = 34439808.

The previous prime is 131642443. The next prime is 131642473. The reversal of 131642460 is 64246131.

131642460 is a `hidden beast` number, since 13 + 1 + 642 + 4 + 6 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2641 + ... + 16439.

It is an arithmetic number, because the mean of its divisors is an integer number (5651100).

Almost surely, 2^131642460 is an apocalyptic number.

131642460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131642460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203439600).

131642460 is an abundant number, since it is smaller than the sum of its proper divisors (275236740).

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

131642460 is a wasteful number, since it uses less digits than its factorization.

131642460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867 (or 13862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 131642460 is about 11473.5548109555. The cubic root of 131642460 is about 508.7042075951.

Adding to 131642460 its reverse (64246131), we get a palindrome (195888591).

The spelling of 131642460 in words is "one hundred thirty-one million, six hundred forty-two thousand, four hundred sixty".