12262157 has 8 divisors (see below), whose sum is σ = 12995640. Its totient is φ = 11549440.

The previous prime is 12262123. The next prime is 12262169. The reversal of 12262157 is 75126221.

It can be written as a sum of positive squares in 4 ways, for example, as 75076 + 12187081 = 274^2 + 3491^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12262157 - 2⁸ = 12261901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12262177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3968 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (1624455).

Almost surely, 2^12262157 is an apocalyptic number.

It is an amenable number.

12262157 is a deficient number, since it is larger than the sum of its proper divisors (733483).

12262157 is a wasteful number, since it uses less digits than its factorization.

12262157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10383.

The product of its digits is 1680, while the sum is 26.

The square root of 12262157 is about 3501.7362836170. The cubic root of 12262157 is about 230.5980466343.

Adding to 12262157 its reverse (75126221), we get a palindrome (87388378).

The spelling of 12262157 in words is "twelve million, two hundred sixty-two thousand, one hundred fifty-seven".