40042422029 has 2 divisors, whose sum is σ = 40042422030. Its totient is φ = 40042422028.

The previous prime is 40042422011. The next prime is 40042422059. The reversal of 40042422029 is 92022424004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26952773929 + 13089648100 = 164173^2 + 114410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40042422029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40042421992 and 40042422010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40042422059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021211014 + 20021211015.

It is an arithmetic number, because the mean of its divisors is an integer number (20021211015).

Almost surely, 2^40042422029 is an apocalyptic number.

It is an amenable number.

40042422029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042422029 is an equidigital number, since it uses as much as digits as its factorization.

40042422029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 40042422029 in words is "forty billion, forty-two million, four hundred twenty-two thousand, twenty-nine".