123968634 has 32 divisors (see below), whose sum is σ = 253834560. Its totient is φ = 40351872.

The previous prime is 123968633. The next prime is 123968651. The reversal of 123968634 is 436869321.

It is not an unprimeable number, because it can be changed into a prime (123968633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42924 + ... + 45720.

It is an arithmetic number, because the mean of its divisors is an integer number (7932330).

Almost surely, 2^123968634 is an apocalyptic number.

123968634 is an abundant number, since it is smaller than the sum of its proper divisors (129865926).

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

123968634 is a wasteful number, since it uses less digits than its factorization.

123968634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974.

The product of its digits is 186624, while the sum is 42.

The square root of 123968634 is about 11134.1202616103. The cubic root of 123968634 is about 498.6210458001.

The spelling of 123968634 in words is "one hundred twenty-three million, nine hundred sixty-eight thousand, six hundred thirty-four".