1402369421 has 4 divisors (see below), whose sum is σ = 1402452000. Its totient is φ = 1402286844.

The previous prime is 1402369393. The next prime is 1402369447. The reversal of 1402369421 is 1249632041.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1402369421 - 2¹⁴ = 1402353037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402369021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5441 + ... + 53238.

It is an arithmetic number, because the mean of its divisors is an integer number (350613000).

Almost surely, 2^1402369421 is an apocalyptic number.

It is an amenable number.

1402369421 is a deficient number, since it is larger than the sum of its proper divisors (82579).

1402369421 is an equidigital number, since it uses as much as digits as its factorization.

1402369421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82578.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1402369421 is about 37448.2232021761. The cubic root of 1402369421 is about 1119.3196923482.

The spelling of 1402369421 in words is "one billion, four hundred two million, three hundred sixty-nine thousand, four hundred twenty-one".