12542155 has 8 divisors (see below), whose sum is σ = 15069600. Its totient is φ = 10021056.

The previous prime is 12542143. The next prime is 12542177. The reversal of 12542155 is 55124521.

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 12542155 - 2¹⁷ = 12411083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6991 + ... + 8599.

It is an arithmetic number, because the mean of its divisors is an integer number (1883700).

Almost surely, 2^12542155 is an apocalyptic number.

12542155 is a deficient number, since it is larger than the sum of its proper divisors (2527445).

12542155 is a wasteful number, since it uses less digits than its factorization.

12542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its digits is 2000, while the sum is 25.

The square root of 12542155 is about 3541.4905054228. The cubic root of 12542155 is about 232.3400371921.

Adding to 12542155 its reverse (55124521), we get a palindrome (67666676).

The spelling of 12542155 in words is "twelve million, five hundred forty-two thousand, one hundred fifty-five".