1406040 has 32 divisors (see below), whose sum is σ = 4218480. Its totient is φ = 374912.

The previous prime is 1406039. The next prime is 1406051. The reversal of 1406040 is 406041.

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

It is a congruent number.

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, 5739 + ... + 5978.

2^1406040 is an apocalyptic number.

1406040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406040 is an abundant number, since it is smaller than the sum of its proper divisors (2812440).

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

1406040 is a wasteful number, since it uses less digits than its factorization.

1406040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11731 (or 11727 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1406040 is about 1185.7655754828. The cubic root of 1406040 is about 112.0295415271.

Subtracting from 1406040 its reverse (406041), we obtain a palindrome (999999).

The spelling of 1406040 in words is "one million, four hundred six thousand, forty".