12861054 has 12 divisors (see below), whose sum is σ = 27865656. Its totient is φ = 4287012.

The previous prime is 12861049. The next prime is 12861059. The reversal of 12861054 is 45016821.

It is an interprime number because it is at equal distance from previous prime (12861049) and next prime (12861059).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357234 + ... + 357269.

It is an arithmetic number, because the mean of its divisors is an integer number (2322138).

Almost surely, 2^12861054 is an apocalyptic number.

12861054 is an abundant number, since it is smaller than the sum of its proper divisors (15004602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12861054 is a wasteful number, since it uses less digits than its factorization.

12861054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714511 (or 714508 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12861054 is about 3586.2311693476. The cubic root of 12861054 is about 234.2927521540.

Adding to 12861054 its reverse (45016821), we get a palindrome (57877875).

The spelling of 12861054 in words is "twelve million, eight hundred sixty-one thousand, fifty-four".