42368271409 has 2 divisors, whose sum is σ = 42368271410. Its totient is φ = 42368271408.

The previous prime is 42368271349. The next prime is 42368271427. The reversal of 42368271409 is 90417286324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29413279009 + 12954992400 = 171503^2 + 113820^2 .

It is a cyclic number.

It is not a de Polignac number, because 42368271409 - 2²³ = 42359882801 is a prime.

It is not a weakly prime, because it can be changed into another prime (42368271479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21184135704 + 21184135705.

It is an arithmetic number, because the mean of its divisors is an integer number (21184135705).

Almost surely, 2^42368271409 is an apocalyptic number.

It is an amenable number.

42368271409 is a deficient number, since it is larger than the sum of its proper divisors (1).

42368271409 is an equidigital number, since it uses as much as digits as its factorization.

42368271409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 42368271409 in words is "forty-two billion, three hundred sixty-eight million, two hundred seventy-one thousand, four hundred nine".