512404542 has 80 divisors (see below), whose sum is σ = 1241512272. Its totient is φ = 157023360.

The previous prime is 512404517. The next prime is 512404579. The reversal of 512404542 is 245404215.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 983242 + ... + 983762.

Almost surely, 2^512404542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512404542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620756136).

512404542 is an abundant number, since it is smaller than the sum of its proper divisors (729107730).

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

512404542 is a wasteful number, since it uses less digits than its factorization.

512404542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 512404542 is about 22636.3544326378. The cubic root of 512404542 is about 800.2106434901.

Adding to 512404542 its reverse (245404215), we get a palindrome (757808757).

The spelling of 512404542 in words is "five hundred twelve million, four hundred four thousand, five hundred forty-two".