520142734 has 8 divisors (see below), whose sum is σ = 791203248. Its totient is φ = 256408320.

The previous prime is 520142717. The next prime is 520142737. The reversal of 520142734 is 437241025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520142737) 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, 1831347 + ... + 1831630.

It is an arithmetic number, because the mean of its divisors is an integer number (98900406).

Almost surely, 2^520142734 is an apocalyptic number.

520142734 is a deficient number, since it is larger than the sum of its proper divisors (271060514).

520142734 is a wasteful number, since it uses less digits than its factorization.

520142734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663050.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 520142734 is about 22806.6379372322. The cubic root of 520142734 is about 804.2187211754.

Adding to 520142734 its reverse (437241025), we get a palindrome (957383759).

The spelling of 520142734 in words is "five hundred twenty million, one hundred forty-two thousand, seven hundred thirty-four".