12149506 has 4 divisors (see below), whose sum is σ = 18224262. Its totient is φ = 6074752.

The previous prime is 12149483. The next prime is 12149507. The reversal of 12149506 is 60594121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11323225 + 826281 = 3365^2 + 909^2 .

It is a super-2 number, since 2×12149506² = 295220992088072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12149507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3037375 + ... + 3037378.

Almost surely, 2^12149506 is an apocalyptic number.

12149506 is a deficient number, since it is larger than the sum of its proper divisors (6074756).

12149506 is an equidigital number, since it uses as much as digits as its factorization.

12149506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6074755.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12149506 is about 3485.6141496155. The cubic root of 12149506 is about 229.8897139815.

The spelling of 12149506 in words is "twelve million, one hundred forty-nine thousand, five hundred six".