512143434542 has 4 divisors (see below), whose sum is σ = 768215151816. Its totient is φ = 256071717270.

The previous prime is 512143434541. The next prime is 512143434611. The reversal of 512143434542 is 245434341215.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 512143434496 and 512143434505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512143434541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128035858634 + ... + 128035858637.

It is an arithmetic number, because the mean of its divisors is an integer number (192053787954).

Almost surely, 2^512143434542 is an apocalyptic number.

512143434542 is a deficient number, since it is larger than the sum of its proper divisors (256071717274).

512143434542 is a wasteful number, since it uses less digits than its factorization.

512143434542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256071717273.

The product of its digits is 230400, while the sum is 38.

Adding to 512143434542 its reverse (245434341215), we get a palindrome (757577775757).

The spelling of 512143434542 in words is "five hundred twelve billion, one hundred forty-three million, four hundred thirty-four thousand, five hundred forty-two".