12542437 has 2 divisors, whose sum is σ = 12542438. Its totient is φ = 12542436.

The previous prime is 12542423. The next prime is 12542449. The reversal of 12542437 is 73424521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 715716 = 3439^2 + 846^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542437 - 2¹¹ = 12540389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12542477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271218 + 6271219.

It is an arithmetic number, because the mean of its divisors is an integer number (6271219).

Almost surely, 2^12542437 is an apocalyptic number.

It is an amenable number.

12542437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542437 is an equidigital number, since it uses as much as digits as its factorization.

12542437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 12542437 is about 3541.5303189441. The cubic root of 12542437 is about 232.3417785037.

Adding to 12542437 its reverse (73424521), we get a palindrome (85966958).

The spelling of 12542437 in words is "twelve million, five hundred forty-two thousand, four hundred thirty-seven".