140020455 has 8 divisors (see below), whose sum is σ = 224032752. Its totient is φ = 74677568.

The previous prime is 140020451. The next prime is 140020457. The reversal of 140020455 is 554020041.

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

It is a cyclic number.

It is not a de Polignac number, because 140020455 - 2² = 140020451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140020451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4667334 + ... + 4667363.

It is an arithmetic number, because the mean of its divisors is an integer number (28004094).

Almost surely, 2^140020455 is an apocalyptic number.

140020455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140020455 is a deficient number, since it is larger than the sum of its proper divisors (84012297).

140020455 is an equidigital number, since it uses as much as digits as its factorization.

140020455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9334705.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 140020455 is about 11833.0239161425. The cubic root of 140020455 is about 519.2746976362.

Adding to 140020455 its reverse (554020041), we get a palindrome (694040496).

The spelling of 140020455 in words is "one hundred forty million, twenty thousand, four hundred fifty-five".