122947845 has 8 divisors (see below), whose sum is σ = 196716576. Its totient is φ = 65572176.

The previous prime is 122947843. The next prime is 122947871. The reversal of 122947845 is 548749221.

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

It is not a de Polignac number, because 122947845 - 2¹ = 122947843 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 122947797 and 122947806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122947843) 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, 4098247 + ... + 4098276.

It is an arithmetic number, because the mean of its divisors is an integer number (24589572).

Almost surely, 2^122947845 is an apocalyptic number.

122947845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122947845 is a deficient number, since it is larger than the sum of its proper divisors (73768731).

122947845 is an equidigital number, since it uses as much as digits as its factorization.

122947845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196531.

The product of its digits is 161280, while the sum is 42.

The square root of 122947845 is about 11088.1849281115. The cubic root of 122947845 is about 497.2486815965.

The spelling of 122947845 in words is "one hundred twenty-two million, nine hundred forty-seven thousand, eight hundred forty-five".