142400322 has 16 divisors (see below), whose sum is σ = 316445280. Its totient is φ = 47466756.

The previous prime is 142400317. The next prime is 142400333. The reversal of 142400322 is 223004241.

142400322 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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 142400295 and 142400304.

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, 1318468 + ... + 1318575.

It is an arithmetic number, because the mean of its divisors is an integer number (19777830).

Almost surely, 2^142400322 is an apocalyptic number.

142400322 is an abundant number, since it is smaller than the sum of its proper divisors (174044958).

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

142400322 is a wasteful number, since it uses less digits than its factorization.

142400322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637054 (or 2637048 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142400322 is about 11933.1606039641. The cubic root of 142400322 is about 522.2001478488.

Adding to 142400322 its reverse (223004241), we get a palindrome (365404563).

The spelling of 142400322 in words is "one hundred forty-two million, four hundred thousand, three hundred twenty-two".