123402033005 has 4 divisors (see below), whose sum is σ = 148082439612. Its totient is φ = 98721626400.

The previous prime is 123402032953. The next prime is 123402033011. The reversal of 123402033005 is 500330204321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28268033161 + 95133999844 = 168131^2 + 308438^2 .

It is not a de Polignac number, because 123402033005 - 2³⁰ = 122328291181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12340203296 + ... + 12340203305.

It is an arithmetic number, because the mean of its divisors is an integer number (37020609903).

Almost surely, 2^123402033005 is an apocalyptic number.

It is an amenable number.

123402033005 is a deficient number, since it is larger than the sum of its proper divisors (24680406607).

123402033005 is an equidigital number, since it uses as much as digits as its factorization.

123402033005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24680406606.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 123402033005 its reverse (500330204321), we get a palindrome (623732237326).

The spelling of 123402033005 in words is "one hundred twenty-three billion, four hundred two million, thirty-three thousand, five".