123700642 has 16 divisors (see below), whose sum is σ = 200414592. Its totient is φ = 56923920.

The previous prime is 123700597. The next prime is 123700651. The reversal of 123700642 is 246007321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167 + ... + 15877.

It is an arithmetic number, because the mean of its divisors is an integer number (12525912).

Almost surely, 2^123700642 is an apocalyptic number.

123700642 is a deficient number, since it is larger than the sum of its proper divisors (76713950).

123700642 is a wasteful number, since it uses less digits than its factorization.

123700642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 123700642 is about 11122.0790322673. The cubic root of 123700642 is about 498.2614848025.

Adding to 123700642 its reverse (246007321), we get a palindrome (369707963).

The spelling of 123700642 in words is "one hundred twenty-three million, seven hundred thousand, six hundred forty-two".