1407040 has 28 divisors (see below), whose sum is σ = 3351276. Its totient is φ = 562688.

The previous prime is 1407037. The next prime is 1407041. The reversal of 1407040 is 407041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 817216 = 768^2 + 904^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1407041) 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, 1879 + ... + 2518.

2^1407040 is an apocalyptic number.

1407040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1407040 is an abundant number, since it is smaller than the sum of its proper divisors (1944236).

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

1407040 is an equidigital number, since it uses as much as digits as its factorization.

1407040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414 (or 4404 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1407040 is about 1186.1871690421. The cubic root of 1407040 is about 112.0560943499.

Subtracting from 1407040 its reverse (407041), we obtain a palindrome (999999).

The spelling of 1407040 in words is "one million, four hundred seven thousand, forty".