12149001 has 8 divisors (see below), whose sum is σ = 17998560. Its totient is φ = 8099316.

The previous prime is 12148973. The next prime is 12149003. The reversal of 12149001 is 10094121.

It is not a de Polignac number, because 12149001 - 2²¹ = 10051849 is a prime.

It is a super-4 number, since 4×12149001⁴ (a number of 29 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12149003) 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, 224955 + ... + 225008.

It is an arithmetic number, because the mean of its divisors is an integer number (2249820).

Almost surely, 2^12149001 is an apocalyptic number.

It is an amenable number.

12149001 is a deficient number, since it is larger than the sum of its proper divisors (5849559).

12149001 is an equidigital number, since it uses as much as digits as its factorization.

12149001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449972 (or 449966 counting only the distinct ones).

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

The square root of 12149001 is about 3485.5417082571. The cubic root of 12149001 is about 229.8865287789.

The spelling of 12149001 in words is "twelve million, one hundred forty-nine thousand, one".