42240002669 has 2 divisors, whose sum is σ = 42240002670. Its totient is φ = 42240002668.

The previous prime is 42240002657. The next prime is 42240002677. The reversal of 42240002669 is 96620004224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32317252900 + 9922749769 = 179770^2 + 99613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42240002669 is a prime.

It is a super-2 number, since 2×42240002669² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42240007669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21120001334 + 21120001335.

It is an arithmetic number, because the mean of its divisors is an integer number (21120001335).

Almost surely, 2^42240002669 is an apocalyptic number.

It is an amenable number.

42240002669 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240002669 is an equidigital number, since it uses as much as digits as its factorization.

42240002669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 42240002669 in words is "forty-two billion, two hundred forty million, two thousand, six hundred sixty-nine".