10109412 has 18 divisors (see below), whose sum is σ = 25554438. Its totient is φ = 3369792.

The previous prime is 10109389. The next prime is 10109413. The reversal of 10109412 is 21490101.

It can be written as a sum of positive squares in only one way, i.e., 9884736 + 224676 = 3144^2 + 474^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (10109413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140373 + ... + 140444.

It is an arithmetic number, because the mean of its divisors is an integer number (1419691).

Almost surely, 2^10109412 is an apocalyptic number.

10109412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10109412 is an abundant number, since it is smaller than the sum of its proper divisors (15445026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10109412 is a wasteful number, since it uses less digits than its factorization.

10109412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280827 (or 280822 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 10109412 is about 3179.5301539693. The cubic root of 10109412 is about 216.2263573560.

Adding to 10109412 its reverse (21490101), we get a palindrome (31599513).

The spelling of 10109412 in words is "ten million, one hundred nine thousand, four hundred twelve".