3402131421 has 8 divisors (see below), whose sum is σ = 4885111840. Its totient is φ = 2093619312.

The previous prime is 3402131419. The next prime is 3402131437. The reversal of 3402131421 is 1241312043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3402131421 - 2¹ = 3402131419 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 (3402131461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43617031 + ... + 43617108.

It is an arithmetic number, because the mean of its divisors is an integer number (610638980).

Almost surely, 2^3402131421 is an apocalyptic number.

It is an amenable number.

3402131421 is a deficient number, since it is larger than the sum of its proper divisors (1482980419).

3402131421 is a wasteful number, since it uses less digits than its factorization.

3402131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87234155.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3402131421 is about 58327.7928692660. The cubic root of 3402131421 is about 1504.0087468663.

Adding to 3402131421 its reverse (1241312043), we get a palindrome (4643443464).

The spelling of 3402131421 in words is "three billion, four hundred two million, one hundred thirty-one thousand, four hundred twenty-one".