42140617 has 2 divisors, whose sum is σ = 42140618. Its totient is φ = 42140616.

The previous prime is 42140611. The next prime is 42140621. The reversal of 42140617 is 71604124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 5707321 = 6036^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 42140617 - 2⁷ = 42140489 is a prime.

It is a super-2 number, since 2×42140617² = 3551663202281378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42140591 and 42140600.

It is not a weakly prime, because it can be changed into another prime (42140611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21070308 + 21070309.

It is an arithmetic number, because the mean of its divisors is an integer number (21070309).

Almost surely, 2^42140617 is an apocalyptic number.

It is an amenable number.

42140617 is a deficient number, since it is larger than the sum of its proper divisors (1).

42140617 is an equidigital number, since it uses as much as digits as its factorization.

42140617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 42140617 is about 6491.5804701167. The cubic root of 42140617 is about 347.9901596944.

The spelling of 42140617 in words is "forty-two million, one hundred forty thousand, six hundred seventeen".