123400420102 has 8 divisors (see below), whose sum is σ = 185120474112. Its totient is φ = 61693595400.

The previous prime is 123400420081. The next prime is 123400420139. The reversal of 123400420102 is 201024004321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123400420102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3283974 + ... + 3321337.

It is an arithmetic number, because the mean of its divisors is an integer number (23140059264).

Almost surely, 2^123400420102 is an apocalyptic number.

123400420102 is a deficient number, since it is larger than the sum of its proper divisors (61720054010).

123400420102 is an equidigital number, since it uses as much as digits as its factorization.

123400420102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614654.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 123400420102 its reverse (201024004321), we get a palindrome (324424424423).

The spelling of 123400420102 in words is "one hundred twenty-three billion, four hundred million, four hundred twenty thousand, one hundred two".