140042431040422 has 4 divisors (see below), whose sum is σ = 210063646560636. Its totient is φ = 70021215520210.

The previous prime is 140042431040389. The next prime is 140042431040423. The reversal of 140042431040422 is 224040134240041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×140042431040422² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140042431040423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010607760104 + ... + 35010607760107.

It is an arithmetic number, because the mean of its divisors is an integer number (52515911640159).

Almost surely, 2^{140042431040422} is an apocalyptic number.

140042431040422 is a deficient number, since it is larger than the sum of its proper divisors (70021215520214).

140042431040422 is an equidigital number, since it uses as much as digits as its factorization.

140042431040422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70021215520213.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 140042431040422 its reverse (224040134240041), we get a palindrome (364082565280463).

The spelling of 140042431040422 in words is "one hundred forty trillion, forty-two billion, four hundred thirty-one million, forty thousand, four hundred twenty-two".