123140450 has 24 divisors (see below), whose sum is σ = 229806720. Its totient is φ = 49091600.

The previous prime is 123140449. The next prime is 123140453. The reversal of 123140450 is 54041321.

It is not an unprimeable number, because it can be changed into a prime (123140453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11591 + ... + 19509.

It is an arithmetic number, because the mean of its divisors is an integer number (9575280).

Almost surely, 2^123140450 is an apocalyptic number.

123140450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123140450 is a deficient number, since it is larger than the sum of its proper divisors (106666270).

123140450 is a wasteful number, since it uses less digits than its factorization.

123140450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8242 (or 8237 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123140450 is about 11096.8666748772. The cubic root of 123140450 is about 497.5082025196.

Adding to 123140450 its reverse (54041321), we get a palindrome (177181771).

The spelling of 123140450 in words is "one hundred twenty-three million, one hundred forty thousand, four hundred fifty".