123543253102 has 4 divisors (see below), whose sum is σ = 185314879656. Its totient is φ = 61771626550.

The previous prime is 123543253081. The next prime is 123543253109. The reversal of 123543253102 is 201352345321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201352345321 = 19 ⋅10597491859.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123543253109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30885813274 + ... + 30885813277.

It is an arithmetic number, because the mean of its divisors is an integer number (46328719914).

Almost surely, 2^123543253102 is an apocalyptic number.

123543253102 is a deficient number, since it is larger than the sum of its proper divisors (61771626554).

123543253102 is an equidigital number, since it uses as much as digits as its factorization.

123543253102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61771626553.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 123543253102 its reverse (201352345321), we get a palindrome (324895598423).

The spelling of 123543253102 in words is "one hundred twenty-three billion, five hundred forty-three million, two hundred fifty-three thousand, one hundred two".