12583642 has 4 divisors (see below), whose sum is σ = 18875466. Its totient is φ = 6291820.

The previous prime is 12583609. The next prime is 12583657. The reversal of 12583642 is 24638521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11621281 + 962361 = 3409^2 + 981^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3145909 + ... + 3145912.

Almost surely, 2^12583642 is an apocalyptic number.

12583642 is a deficient number, since it is larger than the sum of its proper divisors (6291824).

12583642 is an equidigital number, since it uses as much as digits as its factorization.

12583642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291823.

The product of its digits is 11520, while the sum is 31.

The square root of 12583642 is about 3547.3429493073. The cubic root of 12583642 is about 232.5959337408.

It can be divided in two parts, 12583 and 642, that added together give a square (13225 = 115²).

The spelling of 12583642 in words is "twelve million, five hundred eighty-three thousand, six hundred forty-two".