12901056 has 112 divisors (see below), whose sum is σ = 40477440. Its totient is φ = 3548160.

The previous prime is 12901043. The next prime is 12901081. The reversal of 12901056 is 65010921.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38811 + ... + 39141.

Almost surely, 2^12901056 is an apocalyptic number.

12901056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12901056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20238720).

12901056 is an abundant number, since it is smaller than the sum of its proper divisors (27576384).

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

12901056 is a wasteful number, since it uses less digits than its factorization.

12901056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 12901056 is about 3591.8040035614. The cubic root of 12901056 is about 234.5354092643.

Adding to 12901056 its reverse (65010921), we get a palindrome (77911977).

It can be divided in two parts, 1290 and 1056, that added together give a triangular number (2346 = T₆₈).

The spelling of 12901056 in words is "twelve million, nine hundred one thousand, fifty-six".