12542277 has 32 divisors (see below), whose sum is σ = 19630080. Its totient is φ = 7038720.

The previous prime is 12542273. The next prime is 12542287. The reversal of 12542277 is 77224521.

It is not a de Polignac number, because 12542277 - 2² = 12542273 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542273) 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 31 ways as a sum of consecutive naturals, for example, 44178 + ... + 44460.

It is an arithmetic number, because the mean of its divisors is an integer number (613440).

Almost surely, 2^12542277 is an apocalyptic number.

12542277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12542277 is a deficient number, since it is larger than the sum of its proper divisors (7087803).

12542277 is a wasteful number, since it uses less digits than its factorization.

12542277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its digits is 7840, while the sum is 30.

The square root of 12542277 is about 3541.5077297671. The cubic root of 12542277 is about 232.3407905287.

Adding to 12542277 its reverse (77224521), we get a palindrome (89766798).

The spelling of 12542277 in words is "twelve million, five hundred forty-two thousand, two hundred seventy-seven".