1421231 has 8 divisors (see below), whose sum is σ = 1634304. Its totient is φ = 1210680.

The previous prime is 1421227. The next prime is 1421243. The reversal of 1421231 is 1321241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421231 - 2² = 1421227 is a prime.

It is a super-2 number, since 2×1421231² = 4039795110722, which contains 22 as substring.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (204288).

2^1421231 is an apocalyptic number.

1421231 is a deficient number, since it is larger than the sum of its proper divisors (213073).

1421231 is a wasteful number, since it uses less digits than its factorization.

1421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its digits is 48, while the sum is 14.

The square root of 1421231 is about 1192.1539330137. The cubic root of 1421231 is about 112.4315567225.

Adding to 1421231 its reverse (1321241), we get a palindrome (2742472).

The spelling of 1421231 in words is "one million, four hundred twenty-one thousand, two hundred thirty-one".