12642723 has 20 divisors (see below), whose sum is σ = 19050240. Its totient is φ = 8355312.

The previous prime is 12642703. The next prime is 12642743. The reversal of 12642723 is 32724621.

12642723 is a `hidden beast` number, since 12 + 642 + 7 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (12642703) and next prime (12642743).

It is not a de Polignac number, because 12642723 - 2⁵ = 12642691 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12642703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9673 + ... + 10901.

It is an arithmetic number, because the mean of its divisors is an integer number (952512).

Almost surely, 2^12642723 is an apocalyptic number.

12642723 is a deficient number, since it is larger than the sum of its proper divisors (6407517).

12642723 is a wasteful number, since it uses less digits than its factorization.

12642723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 1359 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 12642723 is about 3555.6606980982. The cubic root of 12642723 is about 232.9593830973.

It can be divided in two parts, 126 and 42723, that added together give a square (42849 = 207²).

The spelling of 12642723 in words is "twelve million, six hundred forty-two thousand, seven hundred twenty-three".