123140030 has 32 divisors (see below), whose sum is σ = 239198400. Its totient is φ = 45372672.

The previous prime is 123140011. The next prime is 123140063. The reversal of 123140030 is 30041321.

It is a junction number, because it is equal to n+sod(n) for n = 123139987 and 123140014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108506 + ... + 109634.

It is an arithmetic number, because the mean of its divisors is an integer number (7474950).

Almost surely, 2^123140030 is an apocalyptic number.

123140030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123140030 is a deficient number, since it is larger than the sum of its proper divisors (116058370).

123140030 is a wasteful number, since it uses less digits than its factorization.

123140030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123140030 is about 11096.8477506002. The cubic root of 123140030 is about 497.5076368953.

Adding to 123140030 its reverse (30041321), we get a palindrome (153181351).

The spelling of 123140030 in words is "one hundred twenty-three million, one hundred forty thousand, thirty".