123240012102 has 48 divisors (see below), whose sum is σ = 267459978240. Its totient is φ = 41012390016.

The previous prime is 123240012089. The next prime is 123240012127. The reversal of 123240012102 is 201210042321.

It is a happy number.

123240012102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123240012102² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51499018 + ... + 51501410.

It is an arithmetic number, because the mean of its divisors is an integer number (5572082880).

Almost surely, 2^123240012102 is an apocalyptic number.

123240012102 is an abundant number, since it is smaller than the sum of its proper divisors (144219966138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123240012102 is a wasteful number, since it uses less digits than its factorization.

123240012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917 (or 5914 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 123240012102 its reverse (201210042321), we get a palindrome (324450054423).

The spelling of 123240012102 in words is "one hundred twenty-three billion, two hundred forty million, twelve thousand, one hundred two".