10421815 has 8 divisors (see below), whose sum is σ = 12524400. Its totient is φ = 8325312.

The previous prime is 10421791. The next prime is 10421837. The reversal of 10421815 is 51812401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10421815 - 2⁷ = 10421687 is a prime.

It is a super-2 number, since 2×10421815² = 217228455788450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4252 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (1565550).

Almost surely, 2^10421815 is an apocalyptic number.

10421815 is a deficient number, since it is larger than the sum of its proper divisors (2102585).

10421815 is a wasteful number, since it uses less digits than its factorization.

10421815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 10421815 is about 3228.2835996858. The cubic root of 10421815 is about 218.4310901255.

It can be divided in two parts, 10421 and 815, that added together give a square (11236 = 106²).

The spelling of 10421815 in words is "ten million, four hundred twenty-one thousand, eight hundred fifteen".