122730417 has 8 divisors (see below), whose sum is σ = 181822880. Its totient is φ = 81820260.

The previous prime is 122730401. The next prime is 122730451. The reversal of 122730417 is 714037221.

It is a happy number.

It is not a de Polignac number, because 122730417 - 2⁴ = 122730401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4545571 = 122730417 / (1 + 2 + 2 + 7 + 3 + 0 + 4 + 1 + 7).

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (122730617) 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, 2272759 + ... + 2272812.

It is an arithmetic number, because the mean of its divisors is an integer number (22727860).

Almost surely, 2^122730417 is an apocalyptic number.

It is an amenable number.

122730417 is a deficient number, since it is larger than the sum of its proper divisors (59092463).

122730417 is an equidigital number, since it uses as much as digits as its factorization.

122730417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545580 (or 4545574 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 122730417 is about 11078.3760994110. The cubic root of 122730417 is about 496.9553876345.

Adding to 122730417 its reverse (714037221), we get a palindrome (836767638).

The spelling of 122730417 in words is "one hundred twenty-two million, seven hundred thirty thousand, four hundred seventeen".