123403142221 has 8 divisors (see below), whose sum is σ = 123937833600. Its totient is φ = 122868604320.

The previous prime is 123403142209. The next prime is 123403142227. The reversal of 123403142221 is 122241304321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123403142221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123403142227) by changing a digit.

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, 1753450 + ... + 1822468.

It is an arithmetic number, because the mean of its divisors is an integer number (15492229200).

Almost surely, 2^123403142221 is an apocalyptic number.

It is an amenable number.

123403142221 is a deficient number, since it is larger than the sum of its proper divisors (534691379).

123403142221 is an equidigital number, since it uses as much as digits as its factorization.

123403142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76739.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123403142221 its reverse (122241304321), we get a palindrome (245644446542).

The spelling of 123403142221 in words is "one hundred twenty-three billion, four hundred three million, one hundred forty-two thousand, two hundred twenty-one".