1420835917 has 2 divisors, whose sum is σ = 1420835918. Its totient is φ = 1420835916.

The previous prime is 1420835909. The next prime is 1420835953. The reversal of 1420835917 is 7195380241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891559881 + 529276036 = 29859^2 + 23006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420835917 - 2³ = 1420835909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420835917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420835957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710417958 + 710417959.

It is an arithmetic number, because the mean of its divisors is an integer number (710417959).

Almost surely, 2^1420835917 is an apocalyptic number.

It is an amenable number.

1420835917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420835917 is an equidigital number, since it uses as much as digits as its factorization.

1420835917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1420835917 is about 37693.9771979556. The cubic root of 1420835917 is about 1124.2113760617.

The spelling of 1420835917 in words is "one billion, four hundred twenty million, eight hundred thirty-five thousand, nine hundred seventeen".