172420710423 has 8 divisors (see below), whose sum is σ = 247578456048. Its totient is φ = 106105052544.

The previous prime is 172420710383. The next prime is 172420710439. The reversal of 172420710423 is 324017024271.

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

It is not a de Polignac number, because 172420710423 - 2⁸ = 172420710167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172420710443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210521890 + ... + 2210521967.

It is an arithmetic number, because the mean of its divisors is an integer number (30947307006).

Almost surely, 2^172420710423 is an apocalyptic number.

172420710423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

172420710423 is a deficient number, since it is larger than the sum of its proper divisors (75157745625).

172420710423 is a wasteful number, since it uses less digits than its factorization.

172420710423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421043873.

The product of its (nonzero) digits is 18816, while the sum is 33.

Adding to 172420710423 its reverse (324017024271), we get a palindrome (496437734694).

The spelling of 172420710423 in words is "one hundred seventy-two billion, four hundred twenty million, seven hundred ten thousand, four hundred twenty-three".