123405355002 has 8 divisors (see below), whose sum is σ = 246810710016. Its totient is φ = 41135118332.

The previous prime is 123405354971. The next prime is 123405355009. The reversal of 123405355002 is 200553504321.

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

123405355002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (123405355009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10283779578 + ... + 10283779589.

It is an arithmetic number, because the mean of its divisors is an integer number (30851338752).

Almost surely, 2^123405355002 is an apocalyptic number.

123405355002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123405355002 is a wasteful number, since it uses less digits than its factorization.

123405355002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20567559172.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 123405355002 its reverse (200553504321), we get a palindrome (323958859323).

The spelling of 123405355002 in words is "one hundred twenty-three billion, four hundred five million, three hundred fifty-five thousand, two".