140140042123 has 2 divisors, whose sum is σ = 140140042124. Its totient is φ = 140140042122.

The previous prime is 140140042093. The next prime is 140140042183. The reversal of 140140042123 is 321240041041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140140042123 - 2²⁵ = 140106487691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140140042094 and 140140042103.

It is not a weakly prime, because it can be changed into another prime (140140042183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70070021061 + 70070021062.

It is an arithmetic number, because the mean of its divisors is an integer number (70070021062).

Almost surely, 2^140140042123 is an apocalyptic number.

140140042123 is a deficient number, since it is larger than the sum of its proper divisors (1).

140140042123 is an equidigital number, since it uses as much as digits as its factorization.

140140042123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 140140042123 its reverse (321240041041), we get a palindrome (461380083164).

The spelling of 140140042123 in words is "one hundred forty billion, one hundred forty million, forty-two thousand, one hundred twenty-three".