508721342 has 4 divisors (see below), whose sum is σ = 763082016. Its totient is φ = 254360670.

The previous prime is 508721341. The next prime is 508721351. The reversal of 508721342 is 243127805.

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 = 508721299 and 508721308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508721341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127180334 + ... + 127180337.

It is an arithmetic number, because the mean of its divisors is an integer number (190770504).

Almost surely, 2^508721342 is an apocalyptic number.

508721342 is a deficient number, since it is larger than the sum of its proper divisors (254360674).

508721342 is a wasteful number, since it uses less digits than its factorization.

508721342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254360673.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 508721342 is about 22554.8518505443. The cubic root of 508721342 is about 798.2887075830.

The spelling of 508721342 in words is "five hundred eight million, seven hundred twenty-one thousand, three hundred forty-two".