123133503402 has 128 divisors (see below), whose sum is σ = 337797304320. Its totient is φ = 32376231360.

The previous prime is 123133503379. The next prime is 123133503463. The reversal of 123133503402 is 204305331321.

123133503402 is a `hidden beast` number, since 1 + 2 + 313 + 3 + 5 + 0 + 340 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 1588683 + ... + 1664385.

It is an arithmetic number, because the mean of its divisors is an integer number (2639041440).

Almost surely, 2^123133503402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123133503402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168898652160).

123133503402 is an abundant number, since it is smaller than the sum of its proper divisors (214663800918).

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

123133503402 is a wasteful number, since it uses less digits than its factorization.

123133503402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76065 (or 76059 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 123133503402 its reverse (204305331321), we get a palindrome (327438834723).

The spelling of 123133503402 in words is "one hundred twenty-three billion, one hundred thirty-three million, five hundred three thousand, four hundred two".