140424523 has 4 divisors (see below), whose sum is σ = 140542648. Its totient is φ = 140306400.

The previous prime is 140424521. The next prime is 140424547. The reversal of 140424523 is 325424041.

It is a happy number.

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 140424523 - 2¹ = 140424521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140424521) 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, 57261 + ... + 59662.

It is an arithmetic number, because the mean of its divisors is an integer number (35135662).

Almost surely, 2^140424523 is an apocalyptic number.

140424523 is a deficient number, since it is larger than the sum of its proper divisors (118125).

140424523 is a wasteful number, since it uses less digits than its factorization.

140424523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118124.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140424523 is about 11850.0853583424. The cubic root of 140424523 is about 519.7737218155.

Adding to 140424523 its reverse (325424041), we get a palindrome (465848564).

The spelling of 140424523 in words is "one hundred forty million, four hundred twenty-four thousand, five hundred twenty-three".