10421812 has 12 divisors (see below), whose sum is σ = 18458496. Its totient is φ = 5147960.

The previous prime is 10421791. The next prime is 10421837. The reversal of 10421812 is 21812401.

It is a happy number.

It is a super-2 number, since 2×10421812² = 217228330726688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10421812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15364 + ... + 16027.

It is an arithmetic number, because the mean of its divisors is an integer number (1538208).

Almost surely, 2^10421812 is an apocalyptic number.

It is an amenable number.

10421812 is a deficient number, since it is larger than the sum of its proper divisors (8036684).

10421812 is a wasteful number, since it uses less digits than its factorization.

10421812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31478 (or 31476 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 10421812 is about 3228.2831350425. The cubic root of 10421812 is about 218.4310691665.

The spelling of 10421812 in words is "ten million, four hundred twenty-one thousand, eight hundred twelve".