10135421 has 2 divisors, whose sum is σ = 10135422. Its totient is φ = 10135420.

The previous prime is 10135403. The next prime is 10135423. The reversal of 10135421 is 12453101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 4351396 = 2405^2 + 2086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10135421 is a prime.

Together with 10135423, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10135421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10135423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067710 + 5067711.

It is an arithmetic number, because the mean of its divisors is an integer number (5067711).

Almost surely, 2^10135421 is an apocalyptic number.

It is an amenable number.

10135421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10135421 is an equidigital number, since it uses as much as digits as its factorization.

10135421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 10135421 is about 3183.6175963831. The cubic root of 10135421 is about 216.4116307528.

Adding to 10135421 its reverse (12453101), we get a palindrome (22588522).

The spelling of 10135421 in words is "ten million, one hundred thirty-five thousand, four hundred twenty-one".