140235237427 has 4 divisors (see below), whose sum is σ = 140547565800. Its totient is φ = 139922909056.

The previous prime is 140235237407. The next prime is 140235237433. The reversal of 140235237427 is 724732532041.

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 140235237427 - 2³¹ = 138087753779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140235237427.

It is not an unprimeable number, because it can be changed into a prime (140235237407) 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, 156163513 + ... + 156164410.

It is an arithmetic number, because the mean of its divisors is an integer number (35136891450).

Almost surely, 2^140235237427 is an apocalyptic number.

140235237427 is a deficient number, since it is larger than the sum of its proper divisors (312328373).

140235237427 is an equidigital number, since it uses as much as digits as its factorization.

140235237427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312328372.

The product of its (nonzero) digits is 282240, while the sum is 40.

Adding to 140235237427 its reverse (724732532041), we get a palindrome (864967769468).

The spelling of 140235237427 in words is "one hundred forty billion, two hundred thirty-five million, two hundred thirty-seven thousand, four hundred twenty-seven".