123136002 has 48 divisors (see below), whose sum is σ = 291874752. Its totient is φ = 37208160.

The previous prime is 123135989. The next prime is 123136007. The reversal of 123136002 is 200631321.

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

It is not an unprimeable number, because it can be changed into a prime (123136007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95788 + ... + 97064.

It is an arithmetic number, because the mean of its divisors is an integer number (6080724).

Almost surely, 2^123136002 is an apocalyptic number.

123136002 is an abundant number, since it is smaller than the sum of its proper divisors (168738750).

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

123136002 is a wasteful number, since it uses less digits than its factorization.

123136002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 123136002 is about 11096.6662561330. Note that the first 3 decimals coincide. The cubic root of 123136002 is about 497.5022122239.

Adding to 123136002 its reverse (200631321), we get a palindrome (323767323).

The spelling of 123136002 in words is "one hundred twenty-three million, one hundred thirty-six thousand, two".