140145143251 has 4 divisors (see below), whose sum is σ = 140391444600. Its totient is φ = 139898841904.

The previous prime is 140145143213. The next prime is 140145143267. The reversal of 140145143251 is 152341541041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140145143251 - 2⁷ = 140145143123 is a prime.

It is a super-2 number, since 2×140145143251² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140145140251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123149821 + ... + 123150958.

It is an arithmetic number, because the mean of its divisors is an integer number (35097861150).

Almost surely, 2^140145143251 is an apocalyptic number.

140145143251 is a deficient number, since it is larger than the sum of its proper divisors (246301349).

140145143251 is an equidigital number, since it uses as much as digits as its factorization.

140145143251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246301348.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 140145143251 its reverse (152341541041), we get a palindrome (292486684292).

The spelling of 140145143251 in words is "one hundred forty billion, one hundred forty-five million, one hundred forty-three thousand, two hundred fifty-one".