1230123550 has 24 divisors (see below), whose sum is σ = 2296560600. Its totient is φ = 490214880.

The previous prime is 1230123539. The next prime is 1230123563. The reversal of 1230123550 is 553210321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32280 + ... + 59179.

It is an arithmetic number, because the mean of its divisors is an integer number (95690025).

Almost surely, 2^1230123550 is an apocalyptic number.

1230123550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230123550 is a deficient number, since it is larger than the sum of its proper divisors (1066437050).

1230123550 is a wasteful number, since it uses less digits than its factorization.

1230123550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91740 (or 91735 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1230123550 is about 35073.1171982189. The cubic root of 1230123550 is about 1071.4771428986.

Adding to 1230123550 its reverse (553210321), we get a palindrome (1783333871).

The spelling of 1230123550 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, five hundred fifty".