123342130 has 32 divisors (see below), whose sum is σ = 227156400. Its totient is φ = 48202752.

The previous prime is 123342101. The next prime is 123342137. The reversal of 123342130 is 31243321.

It can be written as a sum of positive squares in 8 ways, for example, as 74356129 + 48986001 = 8623^2 + 6999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123342098 and 123342107.

It is not an unprimeable number, because it can be changed into a prime (123342137) 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 15 ways as a sum of consecutive naturals, for example, 216486 + ... + 217054.

Almost surely, 2^123342130 is an apocalyptic number.

123342130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123342130 is a deficient number, since it is larger than the sum of its proper divisors (103814270).

123342130 is a wasteful number, since it uses less digits than its factorization.

123342130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

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

The square root of 123342130 is about 11105.9502069836. The cubic root of 123342130 is about 497.7796614549.

Adding to 123342130 its reverse (31243321), we get a palindrome (154585451).

The spelling of 123342130 in words is "one hundred twenty-three million, three hundred forty-two thousand, one hundred thirty".