542517907 has 4 divisors (see below), whose sum is σ = 542718576. Its totient is φ = 542317240.

The previous prime is 542517869. The next prime is 542517917. The reversal of 542517907 is 709715245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709715245 = 5 ⋅141943049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542517907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542517907.

It is not an unprimeable number, because it can be changed into a prime (542517917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96223 + ... + 101704.

It is an arithmetic number, because the mean of its divisors is an integer number (135679644).

Almost surely, 2^542517907 is an apocalyptic number.

542517907 is a deficient number, since it is larger than the sum of its proper divisors (200669).

542517907 is a wasteful number, since it uses less digits than its factorization.

542517907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200668.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 542517907 is about 23292.0138030184. The cubic root of 542517907 is about 815.5889989972.

It can be divided in two parts, 5425 and 17907, that added together give a palindrome (23332).

The spelling of 542517907 in words is "five hundred forty-two million, five hundred seventeen thousand, nine hundred seven".