140020424 has 32 divisors (see below), whose sum is σ = 280164000. Its totient is φ = 65411712.

The previous prime is 140020417. The next prime is 140020429. The reversal of 140020424 is 424020041.

It is not an unprimeable number, because it can be changed into a prime (140020429) 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, 4787 + ... + 17405.

It is an arithmetic number, because the mean of its divisors is an integer number (8755125).

Almost surely, 2^140020424 is an apocalyptic number.

It is an amenable number.

140020424 is an abundant number, since it is smaller than the sum of its proper divisors (140143576).

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

140020424 is a wasteful number, since it uses less digits than its factorization.

140020424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12717 (or 12713 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 140020424 is about 11833.0226062490. The cubic root of 140020424 is about 519.2746593144.

Adding to 140020424 its reverse (424020041), we get a palindrome (564040465).

The spelling of 140020424 in words is "one hundred forty million, twenty thousand, four hundred twenty-four".