140424231 has 8 divisors (see below), whose sum is σ = 197086720. Its totient is φ = 88688952.

The previous prime is 140424191. The next prime is 140424241. The reversal of 140424231 is 132424041.

140424231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140424231 - 2⁷ = 140424103 is a prime.

It is a super-2 number, since 2×140424231² = 39437929303882722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140424198 and 140424207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140424241) 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, 1231735 + ... + 1231848.

It is an arithmetic number, because the mean of its divisors is an integer number (24635840).

Almost surely, 2^140424231 is an apocalyptic number.

140424231 is a deficient number, since it is larger than the sum of its proper divisors (56662489).

140424231 is a wasteful number, since it uses less digits than its factorization.

140424231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463605.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140424231 is about 11850.0730377496. The cubic root of 140424231 is about 519.7733615412.

Adding to 140424231 its reverse (132424041), we get a palindrome (272848272).

The spelling of 140424231 in words is "one hundred forty million, four hundred twenty-four thousand, two hundred thirty-one".