3402042409 has 2 divisors, whose sum is σ = 3402042410. Its totient is φ = 3402042408.

The previous prime is 3402042379. The next prime is 3402042419. The reversal of 3402042409 is 9042402043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3280425625 + 121616784 = 57275^2 + 11028^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402042409 - 2²¹ = 3399945257 is a prime.

It is not a weakly prime, because it can be changed into another prime (3402042419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701021204 + 1701021205.

It is an arithmetic number, because the mean of its divisors is an integer number (1701021205).

Almost surely, 2^3402042409 is an apocalyptic number.

It is an amenable number.

3402042409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402042409 is an equidigital number, since it uses as much as digits as its factorization.

3402042409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 3402042409 is about 58327.0298318027. The cubic root of 3402042409 is about 1503.9956299917.

The spelling of 3402042409 in words is "three billion, four hundred two million, forty-two thousand, four hundred nine".