1256454 has 36 divisors (see below), whose sum is σ = 2853396. Its totient is φ = 399504.

The previous prime is 1256449. The next prime is 1256477. The reversal of 1256454 is 4546521.

1256454 is a `hidden beast` number, since 12 + 5 + 645 + 4 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15097 + ... + 15179.

It is an arithmetic number, because the mean of its divisors is an integer number (79261).

2^1256454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1256454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426698).

1256454 is an abundant number, since it is smaller than the sum of its proper divisors (1596942).

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

1256454 is a wasteful number, since it uses less digits than its factorization.

1256454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 117 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1256454 is about 1120.9165892251. The cubic root of 1256454 is about 107.9068126209.

The spelling of 1256454 in words is "one million, two hundred fifty-six thousand, four hundred fifty-four".