123840246 has 16 divisors (see below), whose sum is σ = 247981104. Its totient is φ = 41229984.

The previous prime is 123840239. The next prime is 123840247. The reversal of 123840246 is 642048321.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123840247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6981 + ... + 17216.

It is an arithmetic number, because the mean of its divisors is an integer number (15498819).

Almost surely, 2^123840246 is an apocalyptic number.

123840246 is an abundant number, since it is smaller than the sum of its proper divisors (124140858).

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

123840246 is a wasteful number, since it uses less digits than its factorization.

123840246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25055.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 123840246 is about 11128.3532474486. The cubic root of 123840246 is about 498.4488542030.

Adding to 123840246 its reverse (642048321), we get a palindrome (765888567).

The spelling of 123840246 in words is "one hundred twenty-three million, eight hundred forty thousand, two hundred forty-six".