140445312340 has 12 divisors (see below), whose sum is σ = 294935155956. Its totient is φ = 56178124928.

The previous prime is 140445312311. The next prime is 140445312349. The reversal of 140445312340 is 43213544041.

It can be written as a sum of positive squares in 2 ways, for example, as 14797749316 + 125647563024 = 121646^2 + 354468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140445312349) 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, 3511132789 + ... + 3511132828.

It is an arithmetic number, because the mean of its divisors is an integer number (24577929663).

Almost surely, 2^140445312340 is an apocalyptic number.

140445312340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140445312340 is an abundant number, since it is smaller than the sum of its proper divisors (154489843616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140445312340 is a wasteful number, since it uses less digits than its factorization.

140445312340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7022265626 (or 7022265624 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 140445312340 its reverse (43213544041), we get a palindrome (183658856381).

The spelling of 140445312340 in words is "one hundred forty billion, four hundred forty-five million, three hundred twelve thousand, three hundred forty".