1125420 has 24 divisors (see below), whose sum is σ = 3151344. Its totient is φ = 300096.

The previous prime is 1125419. The next prime is 1125431. The reversal of 1125420 is 245211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1125420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9319 + ... + 9438.

It is an arithmetic number, because the mean of its divisors is an integer number (131306).

2^1125420 is an apocalyptic number.

1125420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125420 is an abundant number, since it is smaller than the sum of its proper divisors (2025924).

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

1125420 is a wasteful number, since it uses less digits than its factorization.

1125420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769 (or 18767 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1125420 is about 1060.8581432029. The cubic root of 1125420 is about 104.0171322861.

The spelling of 1125420 in words is "one million, one hundred twenty-five thousand, four hundred twenty".