1405120 has 28 divisors (see below), whose sum is σ = 3346704. Its totient is φ = 561920.

The previous prime is 1405109. The next prime is 1405127. The reversal of 1405120 is 215041.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405120.

It is not an unprimeable number, because it can be changed into a prime (1405127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876 + ... + 2515.

2^1405120 is an apocalyptic number.

1405120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405120 is an abundant number, since it is smaller than the sum of its proper divisors (1941584).

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

1405120 is an equidigital number, since it uses as much as digits as its factorization.

1405120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408 (or 4398 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1405120 is about 1185.3775769771. The cubic root of 1405120 is about 112.0051018084.

The spelling of 1405120 in words is "one million, four hundred five thousand, one hundred twenty".