103042409 has 2 divisors, whose sum is σ = 103042410. Its totient is φ = 103042408.

The previous prime is 103042393. The next prime is 103042411. The reversal of 103042409 is 904240301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 31047184 = 8485^2 + 5572^2 .

It is a cyclic number.

It is not a de Polignac number, because 103042409 - 2⁴ = 103042393 is a prime.

Together with 103042411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103042439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51521204 + 51521205.

It is an arithmetic number, because the mean of its divisors is an integer number (51521205).

Almost surely, 2^103042409 is an apocalyptic number.

It is an amenable number.

103042409 is a deficient number, since it is larger than the sum of its proper divisors (1).

103042409 is an equidigital number, since it uses as much as digits as its factorization.

103042409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 103042409 is about 10150.9806915391. The cubic root of 103042409 is about 468.8191406398.

The spelling of 103042409 in words is "one hundred three million, forty-two thousand, four hundred nine".