1321401 has 8 divisors (see below), whose sum is σ = 1774144. Its totient is φ = 874800.

The previous prime is 1321399. The next prime is 1321409. The reversal of 1321401 is 1041231.

It is a happy number.

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

It is not a de Polignac number, because 1321401 - 2¹ = 1321399 is a prime.

It is a super-2 number, since 2×1321401² = 3492201205602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321409) 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, 1006 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (221768).

2^1321401 is an apocalyptic number.

It is an amenable number.

1321401 is a deficient number, since it is larger than the sum of its proper divisors (452743).

1321401 is a wasteful number, since it uses less digits than its factorization.

1321401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1321401 is about 1149.5220746032. The cubic root of 1321401 is about 109.7349264880.

Adding to 1321401 its reverse (1041231), we get a palindrome (2362632).

The spelling of 1321401 in words is "one million, three hundred twenty-one thousand, four hundred one".