140403424 has 72 divisors (see below), whose sum is σ = 324224208. Its totient is φ = 59673600.

The previous prime is 140403397. The next prime is 140403427. The reversal of 140403424 is 424304041.

It is a junction number, because it is equal to n+sod(n) for n = 140403395 and 140403404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140403427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236472 + ... + 237064.

It is an arithmetic number, because the mean of its divisors is an integer number (4503114).

Almost surely, 2^140403424 is an apocalyptic number.

140403424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140403424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162112104).

140403424 is an abundant number, since it is smaller than the sum of its proper divisors (183820784).

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

140403424 is a wasteful number, since it uses less digits than its factorization.

140403424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140403424 is about 11849.1950781477. The cubic root of 140403424 is about 519.7476882453.

Adding to 140403424 its reverse (424304041), we get a palindrome (564707465).

The spelling of 140403424 in words is "one hundred forty million, four hundred three thousand, four hundred twenty-four".