10421513 has 2 divisors, whose sum is σ = 10421514. Its totient is φ = 10421512.

The previous prime is 10421491. The next prime is 10421539. The reversal of 10421513 is 31512401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 200704 = 3197^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 10421513 - 2⁶ = 10421449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10421491 and 10421500.

It is not a weakly prime, because it can be changed into another prime (10421573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210756 + 5210757.

It is an arithmetic number, because the mean of its divisors is an integer number (5210757).

Almost surely, 2^10421513 is an apocalyptic number.

It is an amenable number.

10421513 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421513 is an equidigital number, since it uses as much as digits as its factorization.

10421513 is an evil number, because the sum of its binary digits is even.

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

The square root of 10421513 is about 3228.2368252655. The cubic root of 10421513 is about 218.4289802299.

Adding to 10421513 its reverse (31512401), we get a palindrome (41933914).

The spelling of 10421513 in words is "ten million, four hundred twenty-one thousand, five hundred thirteen".