42404269 has 2 divisors, whose sum is σ = 42404270. Its totient is φ = 42404268.

The previous prime is 42404261. The next prime is 42404359. The reversal of 42404269 is 96240424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 19027044 = 4835^2 + 4362^2 .

It is a cyclic number.

It is not a de Polignac number, because 42404269 - 2³ = 42404261 is a prime.

It is a super-2 number, since 2×42404269² = 3596244058848722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42404269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42404261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202134 + 21202135.

It is an arithmetic number, because the mean of its divisors is an integer number (21202135).

Almost surely, 2^42404269 is an apocalyptic number.

It is an amenable number.

42404269 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404269 is an equidigital number, since it uses as much as digits as its factorization.

42404269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 42404269 is about 6511.8560334209. The cubic root of 42404269 is about 348.7143827828.

The spelling of 42404269 in words is "forty-two million, four hundred four thousand, two hundred sixty-nine".