1154920 has 32 divisors (see below), whose sum is σ = 2799720. Its totient is φ = 426240.

The previous prime is 1154911. The next prime is 1154927. The reversal of 1154920 is 294511.

It can be written as a sum of positive squares in 4 ways, for example, as 820836 + 334084 = 906^2 + 578^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1154891 and 1154900.

It is not an unprimeable number, because it can be changed into a prime (1154927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591 + ... + 1630.

2^1154920 is an apocalyptic number.

1154920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154920 is an abundant number, since it is smaller than the sum of its proper divisors (1644800).

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

1154920 is a wasteful number, since it uses less digits than its factorization.

1154920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1154920 is about 1074.6720429973. The cubic root of 1154920 is about 104.9181523916.

The spelling of 1154920 in words is "one million, one hundred fifty-four thousand, nine hundred twenty".