140422642 has 8 divisors (see below), whose sum is σ = 210684636. Its totient is φ = 70194432.

The previous prime is 140422621. The next prime is 140422643. The reversal of 140422642 is 246224041.

It is a happy number.

140422642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 111703761 + 28718881 = 10569^2 + 5359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140422643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10038 + ... + 19534.

Almost surely, 2^140422642 is an apocalyptic number.

140422642 is a deficient number, since it is larger than the sum of its proper divisors (70261994).

140422642 is an equidigital number, since it uses as much as digits as its factorization.

140422642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16892.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 140422642 is about 11850.0059915597. The cubic root of 140422642 is about 519.7714009988.

Adding to 140422642 its reverse (246224041), we get a palindrome (386646683).

The spelling of 140422642 in words is "one hundred forty million, four hundred twenty-two thousand, six hundred forty-two".