140423424 has 72 divisors (see below), whose sum is σ = 379448160. Its totient is φ = 46092288.

The previous prime is 140423389. The next prime is 140423443. The reversal of 140423424 is 424324041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 140423394 and 140423403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50092 + ... + 52820.

Almost surely, 2^140423424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189724080).

140423424 is an abundant number, since it is smaller than the sum of its proper divisors (239024736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140423424 is an equidigital number, since it uses as much as digits as its factorization.

140423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 140423424 is about 11850.0389872776. The cubic root of 140423424 is about 519.7723658491.

Adding to 140423424 its reverse (424324041), we get a palindrome (564747465).

The spelling of 140423424 in words is "one hundred forty million, four hundred twenty-three thousand, four hundred twenty-four".