123820102 has 16 divisors (see below), whose sum is σ = 212447520. Its totient is φ = 53019648.

The previous prime is 123820069. The next prime is 123820127. The reversal of 123820102 is 201028321.

It is a self number, because there is not a number n which added to its sum of digits gives 123820102.

It is a congruent number.

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, 16588 + ... + 22864.

It is an arithmetic number, because the mean of its divisors is an integer number (13277970).

Almost surely, 2^123820102 is an apocalyptic number.

123820102 is a deficient number, since it is larger than the sum of its proper divisors (88627418).

123820102 is a wasteful number, since it uses less digits than its factorization.

123820102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7695.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 123820102 is about 11127.4481351296. The cubic root of 123820102 is about 498.4218266453.

Adding to 123820102 its reverse (201028321), we get a palindrome (324848423).

The spelling of 123820102 in words is "one hundred twenty-three million, eight hundred twenty thousand, one hundred two".