140020540023 has 16 divisors (see below), whose sum is σ = 229777296896. Its totient is φ = 73856988000.

The previous prime is 140020539991. The next prime is 140020540039. The reversal of 140020540023 is 320045020041.

It is not a de Polignac number, because 140020540023 - 2⁵ = 140020539991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140020540063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256447603 + ... + 256448148.

It is an arithmetic number, because the mean of its divisors is an integer number (14361081056).

Almost surely, 2^140020540023 is an apocalyptic number.

140020540023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

140020540023 is a deficient number, since it is larger than the sum of its proper divisors (89756756873).

140020540023 is a wasteful number, since it uses less digits than its factorization.

140020540023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512895774.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 140020540023 its reverse (320045020041), we get a palindrome (460065560064).

The spelling of 140020540023 in words is "one hundred forty billion, twenty million, five hundred forty thousand, twenty-three".