140224521 has 8 divisors (see below), whose sum is σ = 187194880. Its totient is φ = 93368592.

The previous prime is 140224507. The next prime is 140224523. The reversal of 140224521 is 125422041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140224521 - 2⁶ = 140224457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140224523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25705 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (23399360).

Almost surely, 2^140224521 is an apocalyptic number.

It is an amenable number.

140224521 is a deficient number, since it is larger than the sum of its proper divisors (46970359).

140224521 is an equidigital number, since it uses as much as digits as its factorization.

140224521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57215.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140224521 is about 11841.6435092431. The cubic root of 140224521 is about 519.5268390670.

Adding to 140224521 its reverse (125422041), we get a palindrome (265646562).

The spelling of 140224521 in words is "one hundred forty million, two hundred twenty-four thousand, five hundred twenty-one".