130278921 has 8 divisors (see below), whose sum is σ = 174451680. Its totient is φ = 86479392.

The previous prime is 130278919. The next prime is 130278931. The reversal of 130278921 is 129872031.

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

It is not a de Polignac number, because 130278921 - 2¹ = 130278919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130278931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92491 + ... + 93888.

It is an arithmetic number, because the mean of its divisors is an integer number (21806460).

Almost surely, 2^130278921 is an apocalyptic number.

It is an amenable number.

130278921 is a deficient number, since it is larger than the sum of its proper divisors (44172759).

130278921 is a wasteful number, since it uses less digits than its factorization.

130278921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186615.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 130278921 is about 11413.9791922011. The cubic root of 130278921 is about 506.9417398207.

The spelling of 130278921 in words is "one hundred thirty million, two hundred seventy-eight thousand, nine hundred twenty-one".