10010421 has 6 divisors (see below), whose sum is σ = 14459510. Its totient is φ = 6673608.

The previous prime is 10010419. The next prime is 10010431. The reversal of 10010421 is 12401001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8346321 + 1664100 = 2889^2 + 1290^2 .

It is not a de Polignac number, because 10010421 - 2¹ = 10010419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1112269 = 10010421 / (1 + 0 + 0 + 1 + 0 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556126 + ... + 556143.

Almost surely, 2^10010421 is an apocalyptic number.

It is an amenable number.

10010421 is a deficient number, since it is larger than the sum of its proper divisors (4449089).

10010421 is a wasteful number, since it uses less digits than its factorization.

10010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112275 (or 1112272 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10010421 is about 3163.9249358984. The cubic root of 10010421 is about 215.5182809017.

Adding to 10010421 its reverse (12401001), we get a palindrome (22411422).

The spelling of 10010421 in words is "ten million, ten thousand, four hundred twenty-one".