10290421 has 4 divisors (see below), whose sum is σ = 10390432. Its totient is φ = 10190412.

The previous prime is 10290383. The next prime is 10290433. The reversal of 10290421 is 12409201.

10290421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10290421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10290451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49851 + ... + 50056.

It is an arithmetic number, because the mean of its divisors is an integer number (2597608).

Almost surely, 2^10290421 is an apocalyptic number.

It is an amenable number.

10290421 is a deficient number, since it is larger than the sum of its proper divisors (100011).

10290421 is an equidigital number, since it uses as much as digits as its factorization.

10290421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10290421 is about 3207.8686070349. The cubic root of 10290421 is about 217.5092416912.

Adding to 10290421 its reverse (12409201), we get a palindrome (22699622).

The spelling of 10290421 in words is "ten million, two hundred ninety thousand, four hundred twenty-one".