123142330 has 16 divisors (see below), whose sum is σ = 221930280. Its totient is φ = 49196032.

The previous prime is 123142307. The next prime is 123142337. The reversal of 123142330 is 33241321.

It can be written as a sum of positive squares in 4 ways, for example, as 120187369 + 2954961 = 10963^2 + 1719^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123142298 and 123142307.

It is not an unprimeable number, because it can be changed into a prime (123142337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1386 + ... + 15754.

Almost surely, 2^123142330 is an apocalyptic number.

123142330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123142330 is a deficient number, since it is larger than the sum of its proper divisors (98787950).

123142330 is a wasteful number, since it uses less digits than its factorization.

123142330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15233.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123142330 is about 11096.9513831502. The cubic root of 123142330 is about 497.5107343458.

Adding to 123142330 its reverse (33241321), we get a palindrome (156383651).

The spelling of 123142330 in words is "one hundred twenty-three million, one hundred forty-two thousand, three hundred thirty".