140424123 has 16 divisors (see below), whose sum is σ = 216060416. Its totient is φ = 79462080.

The previous prime is 140424113. The next prime is 140424143. The reversal of 140424123 is 321424041.

It is not a de Polignac number, because 140424123 - 2⁵ = 140424091 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140424123.

It is not an unprimeable number, because it can be changed into a prime (140424103) 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, 30298 + ... + 34623.

It is an arithmetic number, because the mean of its divisors is an integer number (13503776).

Almost surely, 2^140424123 is an apocalyptic number.

140424123 is a deficient number, since it is larger than the sum of its proper divisors (75636293).

140424123 is a wasteful number, since it uses less digits than its factorization.

140424123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65034.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140424123 is about 11850.0684808148. The cubic root of 140424123 is about 519.7732282890.

Adding to 140424123 its reverse (321424041), we get a palindrome (461848164).

The spelling of 140424123 in words is "one hundred forty million, four hundred twenty-four thousand, one hundred twenty-three".