42404400029 has 2 divisors, whose sum is σ = 42404400030. Its totient is φ = 42404400028.

The previous prime is 42404399969. The next prime is 42404400107. The reversal of 42404400029 is 92000440424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42220797529 + 183602500 = 205477^2 + 13550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42404400029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42404399974 and 42404400010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42404400229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202200014 + 21202200015.

It is an arithmetic number, because the mean of its divisors is an integer number (21202200015).

Almost surely, 2^42404400029 is an apocalyptic number.

It is an amenable number.

42404400029 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404400029 is an equidigital number, since it uses as much as digits as its factorization.

42404400029 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 42404400029 in words is "forty-two billion, four hundred four million, four hundred thousand, twenty-nine".