140421222 has 16 divisors (see below), whose sum is σ = 312047280. Its totient is φ = 46807056.

The previous prime is 140421217. The next prime is 140421283. The reversal of 140421222 is 222124041.

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 = 140421195 and 140421204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300143 + ... + 1300250.

It is an arithmetic number, because the mean of its divisors is an integer number (19502955).

Almost surely, 2^140421222 is an apocalyptic number.

140421222 is an abundant number, since it is smaller than the sum of its proper divisors (171626058).

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

140421222 is a wasteful number, since it uses less digits than its factorization.

140421222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600404 (or 2600398 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 140421222 is about 11849.9460758267. The cubic root of 140421222 is about 519.7696489597.

Adding to 140421222 its reverse (222124041), we get a palindrome (362545263).

The spelling of 140421222 in words is "one hundred forty million, four hundred twenty-one thousand, two hundred twenty-two".