140720053 has 4 divisors (see below), whose sum is σ = 141024448. Its totient is φ = 140415660.

The previous prime is 140720029. The next prime is 140720059. The reversal of 140720053 is 350027041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140720053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140720059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151503 + ... + 152428.

It is an arithmetic number, because the mean of its divisors is an integer number (35256112).

Almost surely, 2^140720053 is an apocalyptic number.

It is an amenable number.

140720053 is a deficient number, since it is larger than the sum of its proper divisors (304395).

140720053 is an equidigital number, since it uses as much as digits as its factorization.

140720053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304394.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 140720053 is about 11862.5483349911. The cubic root of 140720053 is about 520.1380957193.

Adding to 140720053 its reverse (350027041), we get a palindrome (490747094).

The spelling of 140720053 in words is "one hundred forty million, seven hundred twenty thousand, fifty-three".