403542121245409 has 2 divisors, whose sum is σ = 403542121245410. Its totient is φ = 403542121245408.

The previous prime is 403542121245301. The next prime is 403542121245433. The reversal of 403542121245409 is 904542121245304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204104882294784 + 199437238950625 = 14286528^2 + 14122225^2 .

It is a cyclic number.

It is not a de Polignac number, because 403542121245409 - 2¹³ = 403542121237217 is a prime.

It is not a weakly prime, because it can be changed into another prime (403542121245509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201771060622704 + 201771060622705.

It is an arithmetic number, because the mean of its divisors is an integer number (201771060622705).

Almost surely, 2^{403542121245409} is an apocalyptic number.

It is an amenable number.

403542121245409 is a deficient number, since it is larger than the sum of its proper divisors (1).

403542121245409 is an equidigital number, since it uses as much as digits as its factorization.

403542121245409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 403542121245409 in words is "four hundred three trillion, five hundred forty-two billion, one hundred twenty-one million, two hundred forty-five thousand, four hundred nine".