1400321 has 4 divisors (see below), whose sum is σ = 1508052. Its totient is φ = 1292592.

The previous prime is 1400303. The next prime is 1400327. The reversal of 1400321 is 1230041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287296 + 1113025 = 536^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400321 - 2¹⁴ = 1383937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1400327) 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, 53846 + ... + 53871.

It is an arithmetic number, because the mean of its divisors is an integer number (377013).

2^1400321 is an apocalyptic number.

It is an amenable number.

1400321 is a deficient number, since it is larger than the sum of its proper divisors (107731).

1400321 is a wasteful number, since it uses less digits than its factorization.

1400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107730.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1400321 is about 1183.3515961032. The cubic root of 1400321 is about 111.8774435345.

Adding to 1400321 its reverse (1230041), we get a palindrome (2630362).

The spelling of 1400321 in words is "one million, four hundred thousand, three hundred twenty-one".