1149920 has 24 divisors (see below), whose sum is σ = 2717064. Its totient is φ = 459904.

The previous prime is 1149919. The next prime is 1149943. The reversal of 1149920 is 299411.

It is a self number, because there is not a number n which added to its sum of digits gives 1149920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (113211).

2^1149920 is an apocalyptic number.

1149920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149920 is an abundant number, since it is smaller than the sum of its proper divisors (1567144).

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

1149920 is an equidigital number, since it uses as much as digits as its factorization.

1149920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202 (or 7194 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1149920 is about 1072.3432286353. The cubic root of 1149920 is about 104.7665258358.

The spelling of 1149920 in words is "one million, one hundred forty-nine thousand, nine hundred twenty".