42077117 has 2 divisors, whose sum is σ = 42077118. Its totient is φ = 42077116.

The previous prime is 42077083. The next prime is 42077141. The reversal of 42077117 is 71177024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38613796 + 3463321 = 6214^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 42077117 - 2⁸ = 42076861 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42077117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42077317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21038558 + 21038559.

It is an arithmetic number, because the mean of its divisors is an integer number (21038559).

Almost surely, 2^42077117 is an apocalyptic number.

It is an amenable number.

42077117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42077117 is an equidigital number, since it uses as much as digits as its factorization.

42077117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 42077117 is about 6486.6876755398. The cubic root of 42077117 is about 347.8152810364.

The spelling of 42077117 in words is "forty-two million, seventy-seven thousand, one hundred seventeen".