122435809142 has 4 divisors (see below), whose sum is σ = 183653713716. Its totient is φ = 61217904570.

The previous prime is 122435809129. The next prime is 122435809147. The reversal of 122435809142 is 241908534221.

122435809142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122435809142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122435809147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30608952284 + ... + 30608952287.

It is an arithmetic number, because the mean of its divisors is an integer number (45913428429).

Almost surely, 2^122435809142 is an apocalyptic number.

122435809142 is a deficient number, since it is larger than the sum of its proper divisors (61217904574).

122435809142 is an equidigital number, since it uses as much as digits as its factorization.

122435809142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61217904573.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 122435809142 in words is "one hundred twenty-two billion, four hundred thirty-five million, eight hundred nine thousand, one hundred forty-two".