140044424 has 64 divisors (see below), whose sum is σ = 298045440. Its totient is φ = 61205760.

The previous prime is 140044423. The next prime is 140044433. The reversal of 140044424 is 424440041.

It is a super-2 number, since 2×140044424² = 39224881386983552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 140044424.

It is not an unprimeable number, because it can be changed into a prime (140044423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303554 + ... + 304014.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^140044424 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 140044424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149022720).

140044424 is an abundant number, since it is smaller than the sum of its proper divisors (158001016).

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

140044424 is a wasteful number, since it uses less digits than its factorization.

140044424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 140044424 is about 11834.0366739334. The cubic root of 140044424 is about 519.3043261289.

Adding to 140044424 its reverse (424440041), we get a palindrome (564484465).

The spelling of 140044424 in words is "one hundred forty million, forty-four thousand, four hundred twenty-four".