140043442421 has 8 divisors (see below), whose sum is σ = 142165917504. Its totient is φ = 137925135040.

The previous prime is 140043442379. The next prime is 140043442423. The reversal of 140043442421 is 124244340041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140043442421 - 2³⁴ = 122863573237 is a prime.

It is a super-2 number, since 2×140043442421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140043442423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974180 + ... + 1108653.

It is an arithmetic number, because the mean of its divisors is an integer number (17770739688).

Almost surely, 2^140043442421 is an apocalyptic number.

It is an amenable number.

140043442421 is a deficient number, since it is larger than the sum of its proper divisors (2122475083).

140043442421 is an equidigital number, since it uses as much as digits as its factorization.

140043442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083851.

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

Adding to 140043442421 its reverse (124244340041), we get a palindrome (264287782462).

The spelling of 140043442421 in words is "one hundred forty billion, forty-three million, four hundred forty-two thousand, four hundred twenty-one".