12577142 has 4 divisors (see below), whose sum is σ = 18865716. Its totient is φ = 6288570.

The previous prime is 12577141. The next prime is 12577157. The reversal of 12577142 is 24177521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12577141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3144284 + ... + 3144287.

It is an arithmetic number, because the mean of its divisors is an integer number (4716429).

Almost surely, 2^12577142 is an apocalyptic number.

12577142 is a deficient number, since it is larger than the sum of its proper divisors (6288574).

12577142 is an equidigital number, since it uses as much as digits as its factorization.

12577142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288573.

The product of its digits is 3920, while the sum is 29.

The square root of 12577142 is about 3546.4266522797. The cubic root of 12577142 is about 232.5558781946. Note that the first 3 decimals are identical.

The spelling of 12577142 in words is "twelve million, five hundred seventy-seven thousand, one hundred forty-two".