42001469 has 2 divisors, whose sum is σ = 42001470. Its totient is φ = 42001468.

The previous prime is 42001447. The next prime is 42001471. The reversal of 42001469 is 96410024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35940025 + 6061444 = 5995^2 + 2462^2 .

It is a cyclic number.

It is not a de Polignac number, because 42001469 - 2²⁰ = 40952893 is a prime.

It is a super-2 number, since 2×42001469² = 3528246796315922, which contains 22 as substring.

Together with 42001471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42001369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000734 + 21000735.

It is an arithmetic number, because the mean of its divisors is an integer number (21000735).

Almost surely, 2^42001469 is an apocalyptic number.

It is an amenable number.

42001469 is a deficient number, since it is larger than the sum of its proper divisors (1).

42001469 is an equidigital number, since it uses as much as digits as its factorization.

42001469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 42001469 is about 6480.8540332274. The cubic root of 42001469 is about 347.6067170471.

The spelling of 42001469 in words is "forty-two million, one thousand, four hundred sixty-nine".