1402739421 has 16 divisors (see below), whose sum is σ = 1931392320. Its totient is φ = 905022720.

The previous prime is 1402739417. The next prime is 1402739441. The reversal of 1402739421 is 1249372041.

It is not a de Polignac number, because 1402739421 - 2² = 1402739417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402739441) 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 15 ways as a sum of consecutive naturals, for example, 35820 + ... + 63941.

It is an arithmetic number, because the mean of its divisors is an integer number (120712020).

Almost surely, 2^1402739421 is an apocalyptic number.

It is an amenable number.

1402739421 is a deficient number, since it is larger than the sum of its proper divisors (528652899).

1402739421 is a wasteful number, since it uses less digits than its factorization.

1402739421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99916.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1402739421 is about 37453.1630306440. The cubic root of 1402739421 is about 1119.4181238224.

The spelling of 1402739421 in words is "one billion, four hundred two million, seven hundred thirty-nine thousand, four hundred twenty-one".