12542550 has 24 divisors (see below), whose sum is σ = 31105896. Its totient is φ = 3344640.

The previous prime is 12542539. The next prime is 12542557. The reversal of 12542550 is 5524521.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12542550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41659 + ... + 41958.

It is an arithmetic number, because the mean of its divisors is an integer number (1296079).

Almost surely, 2^12542550 is an apocalyptic number.

12542550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12542550 is an abundant number, since it is smaller than the sum of its proper divisors (18563346).

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

12542550 is a wasteful number, since it uses less digits than its factorization.

12542550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83632 (or 83627 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 12542550 is about 3541.5462724635. The cubic root of 12542550 is about 232.3424762560.

The spelling of 12542550 in words is "twelve million, five hundred forty-two thousand, five hundred fifty".