140044421002 has 4 divisors (see below), whose sum is σ = 210066631506. Its totient is φ = 70022210500.

The previous prime is 140044420973. The next prime is 140044421003. The reversal of 140044421002 is 200124440041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200124440041 = 10009 ⋅19994449.

It can be written as a sum of positive squares in only one way, i.e., 78971678361 + 61072742641 = 281019^2 + 247129^2 .

It is a super-2 number, since 2×140044421002² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (140044421003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35011105249 + ... + 35011105252.

Almost surely, 2^140044421002 is an apocalyptic number.

140044421002 is a deficient number, since it is larger than the sum of its proper divisors (70022210504).

140044421002 is an equidigital number, since it uses as much as digits as its factorization.

140044421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70022210503.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 140044421002 its reverse (200124440041), we get a palindrome (340168861043).

The spelling of 140044421002 in words is "one hundred forty billion, forty-four million, four hundred twenty-one thousand, two".