122412405 has 8 divisors (see below), whose sum is σ = 195859872. Its totient is φ = 65286608.

The previous prime is 122412401. The next prime is 122412419. The reversal of 122412405 is 504214221.

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

It is a cyclic number.

It is not a de Polignac number, because 122412405 - 2² = 122412401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122412401) 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, 4080399 + ... + 4080428.

It is an arithmetic number, because the mean of its divisors is an integer number (24482484).

Almost surely, 2^122412405 is an apocalyptic number.

122412405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122412405 is a deficient number, since it is larger than the sum of its proper divisors (73447467).

122412405 is an equidigital number, since it uses as much as digits as its factorization.

122412405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160835.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 122412405 is about 11064.0139641994. The cubic root of 122412405 is about 496.5257889609.

Adding to 122412405 its reverse (504214221), we get a palindrome (626626626).

The spelling of 122412405 in words is "one hundred twenty-two million, four hundred twelve thousand, four hundred five".