1421331 has 8 divisors (see below), whose sum is σ = 1977600. Its totient is φ = 906312.

The previous prime is 1421317. The next prime is 1421339. The reversal of 1421331 is 1331241.

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

It is not a de Polignac number, because 1421331 - 2⁶ = 1421267 is a prime.

It is a super-2 number, since 2×1421331² = 4040363623122, which contains 22 as substring.

1421331 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421331.

It is not an unprimeable number, because it can be changed into a prime (1421339) 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, 10231 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (247200).

2^1421331 is an apocalyptic number.

1421331 is a deficient number, since it is larger than the sum of its proper divisors (556269).

1421331 is a wasteful number, since it uses less digits than its factorization.

1421331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20625.

The product of its digits is 72, while the sum is 15.

The square root of 1421331 is about 1192.1958731685. The cubic root of 1421331 is about 112.4341936131.

Adding to 1421331 its reverse (1331241), we get a palindrome (2752572).

The spelling of 1421331 in words is "one million, four hundred twenty-one thousand, three hundred thirty-one".