140521499 has 8 divisors (see below), whose sum is σ = 141990960. Its totient is φ = 139059936.

The previous prime is 140521471. The next prime is 140521517. The reversal of 140521499 is 994125041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140521499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140521429) 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, 37844 + ... + 41390.

It is an arithmetic number, because the mean of its divisors is an integer number (17748870).

Almost surely, 2^140521499 is an apocalyptic number.

140521499 is a deficient number, since it is larger than the sum of its proper divisors (1469461).

140521499 is a wasteful number, since it uses less digits than its factorization.

140521499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 140521499 is about 11854.1764370200. The cubic root of 140521499 is about 519.8933447432.

It can be divided in two parts, 14052 and 1499, that added together give a palindrome (15551).

The spelling of 140521499 in words is "one hundred forty million, five hundred twenty-one thousand, four hundred ninety-nine".