10420056 has 64 divisors (see below), whose sum is σ = 30480000. Its totient is φ = 3289248.

The previous prime is 10420009. The next prime is 10420079. The reversal of 10420056 is 65002401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2835 + ... + 5373.

It is an arithmetic number, because the mean of its divisors is an integer number (476250).

Almost surely, 2^10420056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10420056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15240000).

10420056 is an abundant number, since it is smaller than the sum of its proper divisors (20059944).

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

10420056 is a wasteful number, since it uses less digits than its factorization.

10420056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10420056 is about 3228.0111523971. The cubic root of 10420056 is about 218.4188004586.

Adding to 10420056 its reverse (65002401), we get a palindrome (75422457).

The spelling of 10420056 in words is "ten million, four hundred twenty thousand, fifty-six".