42503828 has 6 divisors (see below), whose sum is σ = 74381706. Its totient is φ = 21251912.

The previous prime is 42503809. The next prime is 42503831. The reversal of 42503828 is 82830524.

It can be written as a sum of positive squares in only one way, i.e., 36990724 + 5513104 = 6082^2 + 2348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42503794 and 42503803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5312975 + ... + 5312982.

It is an arithmetic number, because the mean of its divisors is an integer number (12396951).

Almost surely, 2^42503828 is an apocalyptic number.

It is an amenable number.

42503828 is a deficient number, since it is larger than the sum of its proper divisors (31877878).

42503828 is a wasteful number, since it uses less digits than its factorization.

42503828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10625961 (or 10625959 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 42503828 is about 6519.4959927896. The cubic root of 42503828 is about 348.9870795402.

The spelling of 42503828 in words is "forty-two million, five hundred three thousand, eight hundred twenty-eight".