1269421 has 4 divisors (see below), whose sum is σ = 1276000. Its totient is φ = 1262844.

The previous prime is 1269413. The next prime is 1269427. The reversal of 1269421 is 1249621.

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 1269421 - 2³ = 1269413 is a prime.

It is a super-2 number, since 2×1269421² = 3222859350482, which contains 22 as substring.

It is a Duffinian number.

1269421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2991 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (319000).

2^1269421 is an apocalyptic number.

It is an amenable number.

1269421 is a deficient number, since it is larger than the sum of its proper divisors (6579).

1269421 is an equidigital number, since it uses as much as digits as its factorization.

1269421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578.

The product of its digits is 864, while the sum is 25.

The square root of 1269421 is about 1126.6858479630. The cubic root of 1269421 is about 108.2767536240.

The spelling of 1269421 in words is "one million, two hundred sixty-nine thousand, four hundred twenty-one".