123200420202 has 24 divisors (see below), whose sum is σ = 276820698336. Its totient is φ = 41066806572.

The previous prime is 123200420191. The next prime is 123200420257. The reversal of 123200420202 is 202024002321.

123200420202 is a `hidden beast` number, since 1 + 23 + 20 + 0 + 420 + 202 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126748918 + ... + 126749889.

It is an arithmetic number, because the mean of its divisors is an integer number (11534195764).

Almost surely, 2^123200420202 is an apocalyptic number.

123200420202 is an abundant number, since it is smaller than the sum of its proper divisors (153620278134).

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

123200420202 is an equidigital number, since it uses as much as digits as its factorization.

123200420202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253498824 (or 253498812 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 123200420202 its reverse (202024002321), we get a palindrome (325224422523).

The spelling of 123200420202 in words is "one hundred twenty-three billion, two hundred million, four hundred twenty thousand, two hundred two".