140423222 has 4 divisors (see below), whose sum is σ = 210634836. Its totient is φ = 70211610.

The previous prime is 140423207. The next prime is 140423317. The reversal of 140423222 is 222324041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222324041 = 127 ⋅1750583.

It is a super-2 number, since 2×140423222² = 39437362553722568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140423194 and 140423203.

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 as a sum of consecutive naturals, namely, 35105804 + ... + 35105807.

It is an arithmetic number, because the mean of its divisors is an integer number (52658709).

Almost surely, 2^140423222 is an apocalyptic number.

140423222 is a deficient number, since it is larger than the sum of its proper divisors (70211614).

140423222 is an equidigital number, since it uses as much as digits as its factorization.

140423222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70211613.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140423222 is about 11850.0304640959. The cubic root of 140423222 is about 519.7721166170.

Adding to 140423222 its reverse (222324041), we get a palindrome (362747263).

The spelling of 140423222 in words is "one hundred forty million, four hundred twenty-three thousand, two hundred twenty-two".