3400243421 has 4 divisors (see below), whose sum is σ = 3446822172. Its totient is φ = 3353664672.

The previous prime is 3400243411. The next prime is 3400243453. The reversal of 3400243421 is 1243420043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1088076196 + 2312167225 = 32986^2 + 48085^2 .

It is a cyclic number.

It is not a de Polignac number, because 3400243421 - 2²² = 3396049117 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 (3400243411) 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, 23289266 + ... + 23289411.

It is an arithmetic number, because the mean of its divisors is an integer number (861705543).

Almost surely, 2^3400243421 is an apocalyptic number.

It is an amenable number.

3400243421 is a deficient number, since it is larger than the sum of its proper divisors (46578751).

3400243421 is an equidigital number, since it uses as much as digits as its factorization.

3400243421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46578750.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3400243421 is about 58311.6062289490. The cubic root of 3400243421 is about 1503.7304807253.

Adding to 3400243421 its reverse (1243420043), we get a palindrome (4643663464).

The spelling of 3400243421 in words is "three billion, four hundred million, two hundred forty-three thousand, four hundred twenty-one".