12120478 has 8 divisors (see below), whose sum is σ = 18276480. Its totient is φ = 6028320.

The previous prime is 12120469. The next prime is 12120487. The reversal of 12120478 is 87402121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12120469) and next prime (12120487).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15483 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (2284560).

Almost surely, 2^12120478 is an apocalyptic number.

12120478 is a deficient number, since it is larger than the sum of its proper divisors (6156002).

12120478 is a wasteful number, since it uses less digits than its factorization.

12120478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31922.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12120478 is about 3481.4476873852. The cubic root of 12120478 is about 229.7064812826.

Adding to 12120478 its reverse (87402121), we get a palindrome (99522599).

The spelling of 12120478 in words is "twelve million, one hundred twenty thousand, four hundred seventy-eight".