140215424 has 16 divisors (see below), whose sum is σ = 279335670. Its totient is φ = 70107648.

The previous prime is 140215409. The next prime is 140215477. The reversal of 140215424 is 424512041.

140215424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 104693824 + 35521600 = 10232^2 + 5960^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 140215424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547589 + ... + 547844.

Almost surely, 2^140215424 is an apocalyptic number.

It is an amenable number.

140215424 is a deficient number, since it is larger than the sum of its proper divisors (139120246).

140215424 is an equidigital number, since it uses as much as digits as its factorization.

140215424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095447 (or 1095435 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 140215424 is about 11841.2593924802. The cubic root of 140215424 is about 519.5156041374.

Adding to 140215424 its reverse (424512041), we get a palindrome (564727465).

The spelling of 140215424 in words is "one hundred forty million, two hundred fifteen thousand, four hundred twenty-four".