12045981 has 8 divisors (see below), whose sum is σ = 16906720. Its totient is φ = 7607952.

The previous prime is 12045973. The next prime is 12046003. The reversal of 12045981 is 18954021.

It is a happy number.

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

It is not a de Polignac number, because 12045981 - 2³ = 12045973 is a prime.

It is a super-2 number, since 2×12045981² = 290211316504722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105610 + ... + 105723.

It is an arithmetic number, because the mean of its divisors is an integer number (2113340).

Almost surely, 2^12045981 is an apocalyptic number.

It is an amenable number.

12045981 is a deficient number, since it is larger than the sum of its proper divisors (4860739).

12045981 is a wasteful number, since it uses less digits than its factorization.

12045981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211355.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12045981 is about 3470.7320553451. The cubic root of 12045981 is about 229.2348930670.

The spelling of 12045981 in words is "twelve million, forty-five thousand, nine hundred eighty-one".