10420172 has 12 divisors (see below), whose sum is σ = 20840400. Its totient is φ = 4465776.

The previous prime is 10420169. The next prime is 10420177. The reversal of 10420172 is 27102401.

10420172 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 10420172.

It is not an unprimeable number, because it can be changed into a prime (10420177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186047 + ... + 186102.

It is an arithmetic number, because the mean of its divisors is an integer number (1736700).

Almost surely, 2^10420172 is an apocalyptic number.

It is an amenable number.

10420172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10420172 is a wasteful number, since it uses less digits than its factorization.

10420172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372160 (or 372158 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 10420172 is about 3228.0291200669. The cubic root of 10420172 is about 218.4196109625.

Adding to 10420172 its reverse (27102401), we get a palindrome (37522573).

The spelling of 10420172 in words is "ten million, four hundred twenty thousand, one hundred seventy-two".