140520452 has 12 divisors (see below), whose sum is σ = 246143436. Its totient is φ = 70193760.

The previous prime is 140520433. The next prime is 140520463. The reversal of 140520452 is 254025041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 138627076 + 1893376 = 11774^2 + 1376^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11699 + ... + 20442.

It is an arithmetic number, because the mean of its divisors is an integer number (20511953).

Almost surely, 2^140520452 is an apocalyptic number.

It is an amenable number.

140520452 is a deficient number, since it is larger than the sum of its proper divisors (105622984).

140520452 is a wasteful number, since it uses less digits than its factorization.

140520452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33238 (or 33236 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 140520452 is about 11854.1322752870. The cubic root of 140520452 is about 519.8920535299.

Adding to 140520452 its reverse (254025041), we get a palindrome (394545493).

The spelling of 140520452 in words is "one hundred forty million, five hundred twenty thousand, four hundred fifty-two".