140540523 has 16 divisors (see below), whose sum is σ = 192621600. Its totient is φ = 91111680.

The previous prime is 140540507. The next prime is 140540551. The reversal of 140540523 is 325045041.

It is not a de Polignac number, because 140540523 - 2⁴ = 140540507 is a prime.

It is a super-2 number, since 2×140540523² = 39503277210227058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140540493 and 140540502.

It is not an unprimeable number, because it can be changed into a prime (140540503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11973 + ... + 20601.

It is an arithmetic number, because the mean of its divisors is an integer number (12038850).

Almost surely, 2^140540523 is an apocalyptic number.

140540523 is a deficient number, since it is larger than the sum of its proper divisors (52081077).

140540523 is an equidigital number, since it uses as much as digits as its factorization.

140540523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 140540523 is about 11854.9788274800. The cubic root of 140540523 is about 519.9168049842.

Adding to 140540523 its reverse (325045041), we get a palindrome (465585564).

The spelling of 140540523 in words is "one hundred forty million, five hundred forty thousand, five hundred twenty-three".