10200042 has 24 divisors (see below), whose sum is σ = 22201920. Its totient is φ = 3384360.

The previous prime is 10200037. The next prime is 10200067. The reversal of 10200042 is 24000201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10199997 and 10200033.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3117 + ... + 5487.

It is an arithmetic number, because the mean of its divisors is an integer number (925080).

Almost surely, 2^10200042 is an apocalyptic number.

10200042 is an abundant number, since it is smaller than the sum of its proper divisors (12001878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10200042 is a wasteful number, since it uses less digits than its factorization.

10200042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 10200042 is about 3193.7504598826. The cubic root of 10200042 is about 216.8705861897.

Adding to 10200042 its reverse (24000201), we get a palindrome (34200243).

The spelling of 10200042 in words is "ten million, two hundred thousand, forty-two".