140155440042523 has 4 divisors (see below), whose sum is σ = 140156824983120. Its totient is φ = 140154055101928.

The previous prime is 140155440042437. The next prime is 140155440042539. The reversal of 140155440042523 is 325240044551041.

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 140155440042523 - 2⁴⁵ = 104971067953691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140155440042223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692318488 + ... + 692520901.

It is an arithmetic number, because the mean of its divisors is an integer number (35039206245780).

Almost surely, 2^{140155440042523} is an apocalyptic number.

140155440042523 is a deficient number, since it is larger than the sum of its proper divisors (1384940597).

140155440042523 is a wasteful number, since it uses less digits than its factorization.

140155440042523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384940596.

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 140155440042523 its reverse (325240044551041), we get a palindrome (465395484593564).

The spelling of 140155440042523 in words is "one hundred forty trillion, one hundred fifty-five billion, four hundred forty million, forty-two thousand, five hundred twenty-three".