142000122440 has 64 divisors (see below), whose sum is σ = 348633711360. Its totient is φ = 51623377920.

The previous prime is 142000122437. The next prime is 142000122469. The reversal of 142000122440 is 44221000241.

142000122440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799249 + ... + 1876511.

It is an arithmetic number, because the mean of its divisors is an integer number (5447401740).

Almost surely, 2^142000122440 is an apocalyptic number.

142000122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142000122440 is an abundant number, since it is smaller than the sum of its proper divisors (206633588920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142000122440 is a wasteful number, since it uses less digits than its factorization.

142000122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81462 (or 81458 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 142000122440 its reverse (44221000241), we get a palindrome (186221122681).

It can be divided in two parts, 1420001 and 22440, that added together give a palindrome (1442441).

The spelling of 142000122440 in words is "one hundred forty-two billion, one hundred twenty-two thousand, four hundred forty".