10405012 has 6 divisors (see below), whose sum is σ = 18208778. Its totient is φ = 5202504.

The previous prime is 10404991. The next prime is 10405019. The reversal of 10405012 is 21050401.

It can be written as a sum of positive squares in only one way, i.e., 9709456 + 695556 = 3116^2 + 834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10404983 and 10405001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10405019) by changing a digit.

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 as a sum of consecutive naturals, namely, 1300623 + ... + 1300630.

Almost surely, 2^10405012 is an apocalyptic number.

It is an amenable number.

10405012 is a deficient number, since it is larger than the sum of its proper divisors (7803766).

10405012 is a wasteful number, since it uses less digits than its factorization.

10405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601257 (or 2601255 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10405012 is about 3225.6800833313. The cubic root of 10405012 is about 218.3136354754.

Adding to 10405012 its reverse (21050401), we get a palindrome (31455413).

The spelling of 10405012 in words is "ten million, four hundred five thousand, twelve".