1254840 has 32 divisors (see below), whose sum is σ = 3764880. Its totient is φ = 334592.

The previous prime is 1254839. The next prime is 1254863. The reversal of 1254840 is 484521.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1254840.

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, 5109 + ... + 5348.

2^1254840 is an apocalyptic number.

1254840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254840 is an abundant number, since it is smaller than the sum of its proper divisors (2510040).

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

1254840 is a wasteful number, since it uses less digits than its factorization.

1254840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471 (or 10467 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1254840 is about 1120.1964113494. The cubic root of 1254840 is about 107.8605882935.

The spelling of 1254840 in words is "one million, two hundred fifty-four thousand, eight hundred forty".