140040538 has 8 divisors (see below), whose sum is σ = 229157280. Its totient is φ = 63654780.

The previous prime is 140040529. The next prime is 140040539. The reversal of 140040538 is 835040041.

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

It is a super-2 number, since 2×140040538² = 39222704566658888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140040539) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3182718 + ... + 3182761.

It is an arithmetic number, because the mean of its divisors is an integer number (28644660).

Almost surely, 2^140040538 is an apocalyptic number.

140040538 is a deficient number, since it is larger than the sum of its proper divisors (89116742).

140040538 is a wasteful number, since it uses less digits than its factorization.

140040538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365492.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 140040538 is about 11833.8724853701. The cubic root of 140040538 is about 519.2995228071.

Adding to 140040538 its reverse (835040041), we get a palindrome (975080579).

The spelling of 140040538 in words is "one hundred forty million, forty thousand, five hundred thirty-eight".