517440942 has 24 divisors (see below), whose sum is σ = 1128652200. Its totient is φ = 171321840.

The previous prime is 517440919. The next prime is 517440943. The reversal of 517440942 is 249044715.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 517440897 and 517440906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517440943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93784 + ... + 99147.

It is an arithmetic number, because the mean of its divisors is an integer number (47027175).

Almost surely, 2^517440942 is an apocalyptic number.

517440942 is an abundant number, since it is smaller than the sum of its proper divisors (611211258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517440942 is a wasteful number, since it uses less digits than its factorization.

517440942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193088 (or 193085 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 517440942 is about 22747.3282387185. The cubic root of 517440942 is about 802.8238446075.

The spelling of 517440942 in words is "five hundred seventeen million, four hundred forty thousand, nine hundred forty-two".