3402401421 has 16 divisors (see below), whose sum is σ = 4777583040. Its totient is φ = 2147857920.

The previous prime is 3402401413. The next prime is 3402401461. The reversal of 3402401421 is 1241042043.

It is not a de Polignac number, because 3402401421 - 2³ = 3402401413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402401461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116431 + ... + 142691.

It is an arithmetic number, because the mean of its divisors is an integer number (298598940).

Almost surely, 2^3402401421 is an apocalyptic number.

It is an amenable number.

3402401421 is a deficient number, since it is larger than the sum of its proper divisors (1375181619).

3402401421 is a wasteful number, since it uses less digits than its factorization.

3402401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28556.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 3402401421 is about 58330.1073288915. The cubic root of 3402401421 is about 1504.0485328680.

Adding to 3402401421 its reverse (1241042043), we get a palindrome (4643443464).

The spelling of 3402401421 in words is "three billion, four hundred two million, four hundred one thousand, four hundred twenty-one".