140323122440 has 64 divisors (see below), whose sum is σ = 345826810800. Its totient is φ = 51005882368.

The previous prime is 140323122437. The next prime is 140323122449. The reversal of 140323122440 is 44221323041.

It can be written as a sum of positive squares in 8 ways, for example, as 112926914116 + 27396208324 = 336046^2 + 165518^2 .

It is a super-2 number, since 2×140323122440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140323122449) 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 15 ways as a sum of consecutive naturals, for example, 3538169 + ... + 3577608.

Almost surely, 2^140323122440 is an apocalyptic number.

140323122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140323122440 is an abundant number, since it is smaller than the sum of its proper divisors (205503688360).

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

140323122440 is a wasteful number, since it uses less digits than its factorization.

140323122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115834 (or 7115830 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 140323122440 its reverse (44221323041), we get a palindrome (184544445481).

The spelling of 140323122440 in words is "one hundred forty billion, three hundred twenty-three million, one hundred twenty-two thousand, four hundred forty".