123305042402 has 16 divisors (see below), whose sum is σ = 190276931520. Its totient is φ = 59901986352.

The previous prime is 123305042369. The next prime is 123305042411. The reversal of 123305042402 is 204240503321.

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 7 ways as a sum of consecutive naturals, for example, 5635952 + ... + 5657787.

It is an arithmetic number, because the mean of its divisors is an integer number (11892308220).

Almost surely, 2^123305042402 is an apocalyptic number.

123305042402 is a deficient number, since it is larger than the sum of its proper divisors (66971889118).

123305042402 is a wasteful number, since it uses less digits than its factorization.

123305042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11293897.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 123305042402 its reverse (204240503321), we get a palindrome (327545545723).

The spelling of 123305042402 in words is "one hundred twenty-three billion, three hundred five million, forty-two thousand, four hundred two".