140520153 has 4 divisors (see below), whose sum is σ = 187360208. Its totient is φ = 93680100.

The previous prime is 140520137. The next prime is 140520157. The reversal of 140520153 is 351025041.

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 not a de Polignac number, because 140520153 - 2⁴ = 140520137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140520157) 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 3 ways as a sum of consecutive naturals, for example, 23420023 + ... + 23420028.

It is an arithmetic number, because the mean of its divisors is an integer number (46840052).

Almost surely, 2^140520153 is an apocalyptic number.

It is an amenable number.

140520153 is a deficient number, since it is larger than the sum of its proper divisors (46840055).

140520153 is an equidigital number, since it uses as much as digits as its factorization.

140520153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46840054.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 140520153 is about 11854.1196636444. The cubic root of 140520153 is about 519.8916847868.

Adding to 140520153 its reverse (351025041), we get a palindrome (491545194).

The spelling of 140520153 in words is "one hundred forty million, five hundred twenty thousand, one hundred fifty-three".