1402230421 has 4 divisors (see below), whose sum is σ = 1402676352. Its totient is φ = 1401784492.

The previous prime is 1402230413. The next prime is 1402230451. The reversal of 1402230421 is 1240322041.

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 a cyclic number.

It is not a de Polignac number, because 1402230421 - 2³ = 1402230413 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 (1402230451) 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, 218215 + ... + 224548.

It is an arithmetic number, because the mean of its divisors is an integer number (350669088).

Almost surely, 2^1402230421 is an apocalyptic number.

It is an amenable number.

1402230421 is a deficient number, since it is larger than the sum of its proper divisors (445931).

1402230421 is an equidigital number, since it uses as much as digits as its factorization.

1402230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445930.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1402230421 is about 37446.3672603899. The cubic root of 1402230421 is about 1119.2827095638.

Adding to 1402230421 its reverse (1240322041), we get a palindrome (2642552462).

The spelling of 1402230421 in words is "one billion, four hundred two million, two hundred thirty thousand, four hundred twenty-one".