505839142 has 4 divisors (see below), whose sum is σ = 758758716. Its totient is φ = 252919570.

The previous prime is 505839137. The next prime is 505839149. The reversal of 505839142 is 241938505.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505839149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126459784 + ... + 126459787.

It is an arithmetic number, because the mean of its divisors is an integer number (189689679).

Almost surely, 2^505839142 is an apocalyptic number.

505839142 is a deficient number, since it is larger than the sum of its proper divisors (252919574).

505839142 is a wasteful number, since it uses less digits than its factorization.

505839142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252919573.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 505839142 is about 22490.8679690224. The cubic root of 505839142 is about 796.7782627196.

The spelling of 505839142 in words is "five hundred five million, eight hundred thirty-nine thousand, one hundred forty-two".