1254421 has 4 divisors (see below), whose sum is σ = 1433632. Its totient is φ = 1075212.

The previous prime is 1254377. The next prime is 1254427. The reversal of 1254421 is 1244521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1254421 - 2⁷ = 1254293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254427) 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, 89595 + ... + 89608.

It is an arithmetic number, because the mean of its divisors is an integer number (358408).

2^1254421 is an apocalyptic number.

It is an amenable number.

1254421 is a deficient number, since it is larger than the sum of its proper divisors (179211).

1254421 is an equidigital number, since it uses as much as digits as its factorization.

1254421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179210.

The product of its digits is 320, while the sum is 19.

The square root of 1254421 is about 1120.0093749608. The cubic root of 1254421 is about 107.8485818179.

Adding to 1254421 its reverse (1244521), we get a palindrome (2498942).

The spelling of 1254421 in words is "one million, two hundred fifty-four thousand, four hundred twenty-one".