12542895 has 24 divisors (see below), whose sum is σ = 21860592. Its totient is φ = 6652800.

The previous prime is 12542891. The next prime is 12542897. The reversal of 12542895 is 59824521.

It is not a de Polignac number, because 12542895 - 2² = 12542891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542891) 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 in 23 ways as a sum of consecutive naturals, for example, 8835 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (910858).

Almost surely, 2^12542895 is an apocalyptic number.

12542895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12542895 is a deficient number, since it is larger than the sum of its proper divisors (9317697).

12542895 is a wasteful number, since it uses less digits than its factorization.

12542895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1540 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 12542895 is about 3541.5949796666. The cubic root of 12542895 is about 232.3446065357.

The spelling of 12542895 in words is "twelve million, five hundred forty-two thousand, eight hundred ninety-five".