1404140 has 12 divisors (see below), whose sum is σ = 2948736. Its totient is φ = 561648.

The previous prime is 1404133. The next prime is 1404163. The reversal of 1404140 is 414041.

1404140 = T₃₃₀ + T₃₃₁ + ... + T₃₅₃.

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, 35084 + ... + 35123.

It is an arithmetic number, because the mean of its divisors is an integer number (245728).

2^1404140 is an apocalyptic number.

1404140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1404140 is an abundant number, since it is smaller than the sum of its proper divisors (1544596).

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

1404140 is a wasteful number, since it uses less digits than its factorization.

1404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70216 (or 70214 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1404140 is about 1184.9641344783. The cubic root of 1404140 is about 111.9790564580.

Adding to 1404140 its reverse (414041), we get a palindrome (1818181).

Subtracting from 1404140 its reverse (414041), we obtain a palindrome (990099).

The spelling of 1404140 in words is "one million, four hundred four thousand, one hundred forty".