1402045221 has 4 divisors (see below), whose sum is σ = 1869393632. Its totient is φ = 934696812.

The previous prime is 1402045193. The next prime is 1402045231. The reversal of 1402045221 is 1225402041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1402045221 - 2⁵ = 1402045189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402045231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233674201 + ... + 233674206.

It is an arithmetic number, because the mean of its divisors is an integer number (467348408).

Almost surely, 2^1402045221 is an apocalyptic number.

It is an amenable number.

1402045221 is a deficient number, since it is larger than the sum of its proper divisors (467348411).

1402045221 is an equidigital number, since it uses as much as digits as its factorization.

1402045221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467348410.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1402045221 is about 37443.8943086854. The cubic root of 1402045221 is about 1119.2334308619.

Adding to 1402045221 its reverse (1225402041), we get a palindrome (2627447262).

The spelling of 1402045221 in words is "one billion, four hundred two million, forty-five thousand, two hundred twenty-one".