130921740 has 36 divisors (see below), whose sum is σ = 397129824. Its totient is φ = 34912416.

The previous prime is 130921673. The next prime is 130921741. The reversal of 130921740 is 47129031.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (130921741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363492 + ... + 363851.

It is an arithmetic number, because the mean of its divisors is an integer number (11031384).

Almost surely, 2^130921740 is an apocalyptic number.

130921740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130921740 is an abundant number, since it is smaller than the sum of its proper divisors (266208084).

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

130921740 is a wasteful number, since it uses less digits than its factorization.

130921740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727358 (or 727353 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 130921740 is about 11442.1038275310. The cubic root of 130921740 is about 507.7741519886.

The spelling of 130921740 in words is "one hundred thirty million, nine hundred twenty-one thousand, seven hundred forty".