1402123321 has 4 divisors (see below), whose sum is σ = 1428578532. Its totient is φ = 1375668112.

The previous prime is 1402123319. The next prime is 1402123343. The reversal of 1402123321 is 1233212041.

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 587820025 + 814303296 = 24245^2 + 28536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402123321 - 2¹ = 1402123319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402123301) 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, 13227526 + ... + 13227631.

It is an arithmetic number, because the mean of its divisors is an integer number (357144633).

Almost surely, 2^1402123321 is an apocalyptic number.

It is an amenable number.

1402123321 is a deficient number, since it is larger than the sum of its proper divisors (26455211).

1402123321 is an equidigital number, since it uses as much as digits as its factorization.

1402123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26455210.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1402123321 is about 37444.9371878229. The cubic root of 1402123321 is about 1119.2542125283.

Adding to 1402123321 its reverse (1233212041), we get a palindrome (2635335362).

The spelling of 1402123321 in words is "one billion, four hundred two million, one hundred twenty-three thousand, three hundred twenty-one".