3402342421 has 2 divisors, whose sum is σ = 3402342422. Its totient is φ = 3402342420.

The previous prime is 3402342409. The next prime is 3402342457. The reversal of 3402342421 is 1242432043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3037112100 + 365230321 = 55110^2 + 19111^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402342421 - 2²¹ = 3400245269 is a prime.

It is a super-2 number, since 2×3402342421² = 23151867899472282482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402342121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701171210 + 1701171211.

It is an arithmetic number, because the mean of its divisors is an integer number (1701171211).

Almost surely, 2^3402342421 is an apocalyptic number.

It is an amenable number.

3402342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402342421 is an equidigital number, since it uses as much as digits as its factorization.

3402342421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 3402342421 is about 58329.6015844442. The cubic root of 3402342421 is about 1504.0398390696.

Adding to 3402342421 its reverse (1242432043), we get a palindrome (4644774464).

The spelling of 3402342421 in words is "three billion, four hundred two million, three hundred forty-two thousand, four hundred twenty-one".