42146369 has 2 divisors, whose sum is σ = 42146370. Its totient is φ = 42146368.

The previous prime is 42146353. The next prime is 42146411. The reversal of 42146369 is 96364124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27615025 + 14531344 = 5255^2 + 3812^2 .

It is a cyclic number.

It is not a de Polignac number, because 42146369 - 2⁴ = 42146353 is a prime.

It is a super-2 number, since 2×42146369² = 3552632839768322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42146339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073184 + 21073185.

It is an arithmetic number, because the mean of its divisors is an integer number (21073185).

Almost surely, 2^42146369 is an apocalyptic number.

It is an amenable number.

42146369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42146369 is an equidigital number, since it uses as much as digits as its factorization.

42146369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 42146369 is about 6492.0234904073. The cubic root of 42146369 is about 348.0059919918.

The spelling of 42146369 in words is "forty-two million, one hundred forty-six thousand, three hundred sixty-nine".