140442404429 has 2 divisors, whose sum is σ = 140442404430. Its totient is φ = 140442404428.

The previous prime is 140442404407. The next prime is 140442404449. The reversal of 140442404429 is 924404244041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140233023529 + 209380900 = 374477^2 + 14470^2 .

It is an emirp because it is prime and its reverse (924404244041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140442404429 - 2²⁴ = 140425627213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140442404392 and 140442404401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140442404449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221202214 + 70221202215.

It is an arithmetic number, because the mean of its divisors is an integer number (70221202215).

Almost surely, 2^140442404429 is an apocalyptic number.

It is an amenable number.

140442404429 is a deficient number, since it is larger than the sum of its proper divisors (1).

140442404429 is an equidigital number, since it uses as much as digits as its factorization.

140442404429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 38.

The spelling of 140442404429 in words is "one hundred forty billion, four hundred forty-two million, four hundred four thousand, four hundred twenty-nine".