140042420120423 has 16 divisors (see below), whose sum is σ = 149248999388160. Its totient is φ = 131095984325856.

The previous prime is 140042420120411. The next prime is 140042420120557. The reversal of 140042420120423 is 324021024240041.

It is a happy number.

It is not a de Polignac number, because 140042420120423 - 2²⁰ = 140042419071847 is a prime.

It is a super-2 number, since 2×140042420120423² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140042420120723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15069893 + ... + 22520801.

It is an arithmetic number, because the mean of its divisors is an integer number (9328062461760).

Almost surely, 2^{140042420120423} is an apocalyptic number.

140042420120423 is a deficient number, since it is larger than the sum of its proper divisors (9206579267737).

140042420120423 is a wasteful number, since it uses less digits than its factorization.

140042420120423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7468366.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 140042420120423 its reverse (324021024240041), we get a palindrome (464063444360464).

The spelling of 140042420120423 in words is "one hundred forty trillion, forty-two billion, four hundred twenty million, one hundred twenty thousand, four hundred twenty-three".