501857242 has 12 divisors (see below), whose sum is σ = 760655070. Its totient is φ = 248332416.

The previous prime is 501857231. The next prime is 501857249. The reversal of 501857242 is 242758105.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 495552121 + 6305121 = 22261^2 + 2511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 501857198 and 501857207.

It is not an unprimeable number, because it can be changed into a prime (501857249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5484 + ... + 32152.

Almost surely, 2^501857242 is an apocalyptic number.

501857242 is a deficient number, since it is larger than the sum of its proper divisors (258797828).

501857242 is an equidigital number, since it uses as much as digits as its factorization.

501857242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26865 (or 26768 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 501857242 is about 22402.1704752017. The cubic root of 501857242 is about 794.6820410129.

The spelling of 501857242 in words is "five hundred one million, eight hundred fifty-seven thousand, two hundred forty-two".