42790127 has 2 divisors, whose sum is σ = 42790128. Its totient is φ = 42790126.

The previous prime is 42790123. The next prime is 42790141. The reversal of 42790127 is 72109724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42790127 - 2² = 42790123 is a prime.

It is a super-2 number, since 2×42790127² = 3661989937352258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42790093 and 42790102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42790123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21395063 + 21395064.

It is an arithmetic number, because the mean of its divisors is an integer number (21395064).

Almost surely, 2^42790127 is an apocalyptic number.

42790127 is a deficient number, since it is larger than the sum of its proper divisors (1).

42790127 is an equidigital number, since it uses as much as digits as its factorization.

42790127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 42790127 is about 6541.4162839556. The cubic root of 42790127 is about 349.7689005034.

The spelling of 42790127 in words is "forty-two million, seven hundred ninety thousand, one hundred twenty-seven".