42097119976409 has 2 divisors, whose sum is σ = 42097119976410. Its totient is φ = 42097119976408.

The previous prime is 42097119976277. The next prime is 42097119976423. The reversal of 42097119976409 is 90467991179024.

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., 40403465002384 + 1693654974025 = 6356372^2 + 1301405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42097119976409 is a prime.

It is not a weakly prime, because it can be changed into another prime (42097119976489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21048559988204 + 21048559988205.

It is an arithmetic number, because the mean of its divisors is an integer number (21048559988205).

Almost surely, 2^{42097119976409} is an apocalyptic number.

It is an amenable number.

42097119976409 is a deficient number, since it is larger than the sum of its proper divisors (1).

42097119976409 is an equidigital number, since it uses as much as digits as its factorization.

42097119976409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 42097119976409 in words is "forty-two trillion, ninety-seven billion, one hundred nineteen million, nine hundred seventy-six thousand, four hundred nine".