122309290 has 8 divisors (see below), whose sum is σ = 220156740. Its totient is φ = 48923712.

The previous prime is 122309287. The next prime is 122309323. The reversal of 122309290 is 92903221.

It can be written as a sum of positive squares in 2 ways, for example, as 119443041 + 2866249 = 10929^2 + 1693^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6115455 + ... + 6115474.

Almost surely, 2^122309290 is an apocalyptic number.

122309290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122309290 is a deficient number, since it is larger than the sum of its proper divisors (97847450).

122309290 is a wasteful number, since it uses less digits than its factorization.

122309290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230936.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 122309290 is about 11059.3530552198. The cubic root of 122309290 is about 496.3863323988.

The spelling of 122309290 in words is "one hundred twenty-two million, three hundred nine thousand, two hundred ninety".