420742112117 has 2 divisors, whose sum is σ = 420742112118. Its totient is φ = 420742112116.

The previous prime is 420742112113. The next prime is 420742112123. The reversal of 420742112117 is 711211247024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347621084836 + 73121027281 = 589594^2 + 270409^2 .

It is a cyclic number.

It is not a de Polignac number, because 420742112117 - 2² = 420742112113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420742112113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210371056058 + 210371056059.

It is an arithmetic number, because the mean of its divisors is an integer number (210371056059).

Almost surely, 2^420742112117 is an apocalyptic number.

It is an amenable number.

420742112117 is a deficient number, since it is larger than the sum of its proper divisors (1).

420742112117 is an equidigital number, since it uses as much as digits as its factorization.

420742112117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 420742112117 in words is "four hundred twenty billion, seven hundred forty-two million, one hundred twelve thousand, one hundred seventeen".