123254643 has 16 divisors (see below), whose sum is σ = 167325696. Its totient is φ = 80690400.

The previous prime is 123254639. The next prime is 123254647. The reversal of 123254643 is 346452321.

It is an interprime number because it is at equal distance from previous prime (123254639) and next prime (123254647).

It is not a de Polignac number, because 123254643 - 2² = 123254639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123254643.

It is not an unprimeable number, because it can be changed into a prime (123254647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36880 + ... + 40082.

It is an arithmetic number, because the mean of its divisors is an integer number (10457856).

Almost surely, 2^123254643 is an apocalyptic number.

123254643 is a deficient number, since it is larger than the sum of its proper divisors (44071053).

123254643 is a wasteful number, since it uses less digits than its factorization.

123254643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434.

The product of its digits is 17280, while the sum is 30.

The square root of 123254643 is about 11102.0107638211. The cubic root of 123254643 is about 497.6619413381.

The spelling of 123254643 in words is "one hundred twenty-three million, two hundred fifty-four thousand, six hundred forty-three".