420503572 has 12 divisors (see below), whose sum is σ = 767876256. Its totient is φ = 201110360.

The previous prime is 420503539. The next prime is 420503609. The reversal of 420503572 is 275305024.

It is a self number, because there is not a number n which added to its sum of digits gives 420503572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285254 + ... + 2285437.

It is an arithmetic number, because the mean of its divisors is an integer number (63989688).

Almost surely, 2^420503572 is an apocalyptic number.

It is an amenable number.

420503572 is a deficient number, since it is larger than the sum of its proper divisors (347372684).

420503572 is a wasteful number, since it uses less digits than its factorization.

420503572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570718 (or 4570716 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 420503572 is about 20506.1837502740. The cubic root of 420503572 is about 749.1864196945.

Adding to 420503572 its reverse (275305024), we get a palindrome (695808596).

The spelling of 420503572 in words is "four hundred twenty million, five hundred three thousand, five hundred seventy-two".