130942581 has 16 divisors (see below), whose sum is σ = 217671168. Its totient is φ = 68022000.

The previous prime is 130942571. The next prime is 130942583. The reversal of 130942581 is 185249031.

It is not a de Polignac number, because 130942581 - 2¹⁷ = 130811509 is a prime.

It is a super-2 number, since 2×130942581² = 34291919037883122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130942583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283195 + ... + 283656.

It is an arithmetic number, because the mean of its divisors is an integer number (13604448).

Almost surely, 2^130942581 is an apocalyptic number.

130942581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130942581 is a deficient number, since it is larger than the sum of its proper divisors (86728587).

130942581 is a wasteful number, since it uses less digits than its factorization.

130942581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566872.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 130942581 is about 11443.0145066761. The cubic root of 130942581 is about 507.8010941899.

The spelling of 130942581 in words is "one hundred thirty million, nine hundred forty-two thousand, five hundred eighty-one".