122145505 has 8 divisors (see below), whose sum is σ = 146750400. Its totient is φ = 97599216.

The previous prime is 122145481. The next prime is 122145533. The reversal of 122145505 is 505541221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122145505 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122145505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9925 + ... + 18514.

It is an arithmetic number, because the mean of its divisors is an integer number (18343800).

Almost surely, 2^122145505 is an apocalyptic number.

It is an amenable number.

122145505 is a deficient number, since it is larger than the sum of its proper divisors (24604895).

122145505 is an equidigital number, since it uses as much as digits as its factorization.

122145505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29303.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 122145505 is about 11051.9457562911. The cubic root of 122145505 is about 496.1646622583.

Adding to 122145505 its reverse (505541221), we get a palindrome (627686726).

The spelling of 122145505 in words is "one hundred twenty-two million, one hundred forty-five thousand, five hundred five".