122447878 has 32 divisors (see below), whose sum is σ = 217479168. Its totient is φ = 50618400.

The previous prime is 122447869. The next prime is 122447879. The reversal of 122447878 is 878744221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122447879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45408 + ... + 48028.

It is an arithmetic number, because the mean of its divisors is an integer number (6796224).

Almost surely, 2^122447878 is an apocalyptic number.

122447878 is a deficient number, since it is larger than the sum of its proper divisors (95031290).

122447878 is a wasteful number, since it uses less digits than its factorization.

122447878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748.

The product of its digits is 200704, while the sum is 43.

The square root of 122447878 is about 11065.6169281247. The cubic root of 122447878 is about 496.5737458605.

The spelling of 122447878 in words is "one hundred twenty-two million, four hundred forty-seven thousand, eight hundred seventy-eight".