120813278 has 12 divisors (see below), whose sum is σ = 183561840. Its totient is φ = 59635836.

The previous prime is 120813263. The next prime is 120813281. The reversal of 120813278 is 872318021.

It is a super-2 number, since 2×120813278² = 29191696282210568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7643 + ... + 17321.

It is an arithmetic number, because the mean of its divisors is an integer number (15296820).

Almost surely, 2^120813278 is an apocalyptic number.

120813278 is a deficient number, since it is larger than the sum of its proper divisors (62748562).

120813278 is an frugal number, since it uses more digits than its factorization.

120813278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839 (or 9760 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 120813278 is about 10991.5093595011. The cubic root of 120813278 is about 494.3541936900.

The spelling of 120813278 in words is "one hundred twenty million, eight hundred thirteen thousand, two hundred seventy-eight".