123420100443 has 8 divisors (see below), whose sum is σ = 164563135056. Its totient is φ = 82278566400.

The previous prime is 123420100423. The next prime is 123420100477. The reversal of 123420100443 is 344001024321.

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

It is not a de Polignac number, because 123420100443 - 2⁶ = 123420100379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123420100423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166678 + ... + 524043.

It is an arithmetic number, because the mean of its divisors is an integer number (20570391882).

Almost surely, 2^123420100443 is an apocalyptic number.

123420100443 is a deficient number, since it is larger than the sum of its proper divisors (41143034613).

123420100443 is an equidigital number, since it uses as much as digits as its factorization.

123420100443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750285.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123420100443 its reverse (344001024321), we get a palindrome (467421124764).

The spelling of 123420100443 in words is "one hundred twenty-three billion, four hundred twenty million, one hundred thousand, four hundred forty-three".