142223123440 has 40 divisors (see below), whose sum is σ = 330905383200. Its totient is φ = 56848540416.

The previous prime is 142223123389. The next prime is 142223123489. The reversal of 142223123440 is 44321322241.

142223123440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 142223123399 and 142223123408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523459 + ... + 747298.

It is an arithmetic number, because the mean of its divisors is an integer number (8272634580).

Almost surely, 2^142223123440 is an apocalyptic number.

142223123440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142223123440 is an abundant number, since it is smaller than the sum of its proper divisors (188682259760).

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

142223123440 is a wasteful number, since it uses less digits than its factorization.

142223123440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272169 (or 1272163 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 142223123440 its reverse (44321322241), we get a palindrome (186544445681).

The spelling of 142223123440 in words is "one hundred forty-two billion, two hundred twenty-three million, one hundred twenty-three thousand, four hundred forty".