140422538 has 16 divisors (see below), whose sum is σ = 212509440. Its totient is φ = 69589296.

The previous prime is 140422531. The next prime is 140422561. The reversal of 140422538 is 835224041.

It is a happy number.

140422538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140422538² = 39436978356722888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140422538.

It is not an unprimeable number, because it can be changed into a prime (140422531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125156 + ... + 126272.

It is an arithmetic number, because the mean of its divisors is an integer number (13281840).

Almost surely, 2^140422538 is an apocalyptic number.

140422538 is a deficient number, since it is larger than the sum of its proper divisors (72086902).

140422538 is a wasteful number, since it uses less digits than its factorization.

140422538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 140422538 is about 11850.0016033754. The cubic root of 140422538 is about 519.7712726809.

Adding to 140422538 its reverse (835224041), we get a palindrome (975646579).

The spelling of 140422538 in words is "one hundred forty million, four hundred twenty-two thousand, five hundred thirty-eight".