503508442 has 4 divisors (see below), whose sum is σ = 755262666. Its totient is φ = 251754220.

The previous prime is 503508437. The next prime is 503508449. The reversal of 503508442 is 244805305.

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

It can be written as a sum of positive squares in only one way, i.e., 454073481 + 49434961 = 21309^2 + 7031^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (503508449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125877109 + ... + 125877112.

Almost surely, 2^503508442 is an apocalyptic number.

503508442 is a deficient number, since it is larger than the sum of its proper divisors (251754224).

503508442 is a wasteful number, since it uses less digits than its factorization.

503508442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251754223.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 503508442 is about 22438.9937831446. The cubic root of 503508442 is about 795.5526355433.

The spelling of 503508442 in words is "five hundred three million, five hundred eight thousand, four hundred forty-two".