503408642 has 12 divisors (see below), whose sum is σ = 830000598. Its totient is φ = 228822000.

The previous prime is 503408627. The next prime is 503408663. The reversal of 503408642 is 246804305.

It can be written as a sum of positive squares in only one way, i.e., 489338641 + 14070001 = 22121^2 + 3751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 503408599 and 503408608.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1039859 + ... + 1040342.

Almost surely, 2^503408642 is an apocalyptic number.

503408642 is a deficient number, since it is larger than the sum of its proper divisors (326591956).

503408642 is a wasteful number, since it uses less digits than its factorization.

503408642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080225 (or 2080214 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 503408642 is about 22436.7698655577. The cubic root of 503408642 is about 795.5000701226.

The spelling of 503408642 in words is "five hundred three million, four hundred eight thousand, six hundred forty-two".