509492542 has 16 divisors (see below), whose sum is σ = 826166880. Its totient is φ = 234253152.

The previous prime is 509492539. The next prime is 509492563. The reversal of 509492542 is 245294905.

It is a junction number, because it is equal to n+sod(n) for n = 509492495 and 509492504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30417 + ... + 44092.

It is an arithmetic number, because the mean of its divisors is an integer number (51635430).

Almost surely, 2^509492542 is an apocalyptic number.

509492542 is a deficient number, since it is larger than the sum of its proper divisors (316674338).

509492542 is a wasteful number, since it uses less digits than its factorization.

509492542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74787.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 509492542 is about 22571.9414760893. The cubic root of 509492542 is about 798.6918945326.

The spelling of 509492542 in words is "five hundred nine million, four hundred ninety-two thousand, five hundred forty-two".