122406142 has 16 divisors (see below), whose sum is σ = 189387072. Its totient is φ = 59303200.

The previous prime is 122406139. The next prime is 122406173. The reversal of 122406142 is 241604221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3048 + ... + 15940.

It is an arithmetic number, because the mean of its divisors is an integer number (11836692).

Almost surely, 2^122406142 is an apocalyptic number.

122406142 is a deficient number, since it is larger than the sum of its proper divisors (66980930).

122406142 is a wasteful number, since it uses less digits than its factorization.

122406142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 122406142 is about 11063.7309258676. The cubic root of 122406142 is about 496.5173208811.

The spelling of 122406142 in words is "one hundred twenty-two million, four hundred six thousand, one hundred forty-two".