42402442193 has 2 divisors, whose sum is σ = 42402442194. Its totient is φ = 42402442192.

The previous prime is 42402442171. The next prime is 42402442237. The reversal of 42402442193 is 39124420424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41303652289 + 1098789904 = 203233^2 + 33148^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402442193 - 2⁶ = 42402442129 is a prime.

It is not a weakly prime, because it can be changed into another prime (42402442493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201221096 + 21201221097.

It is an arithmetic number, because the mean of its divisors is an integer number (21201221097).

Almost surely, 2^42402442193 is an apocalyptic number.

It is an amenable number.

42402442193 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402442193 is an equidigital number, since it uses as much as digits as its factorization.

42402442193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 42402442193 in words is "forty-two billion, four hundred two million, four hundred forty-two thousand, one hundred ninety-three".