42684377 has 2 divisors, whose sum is σ = 42684378. Its totient is φ = 42684376.

The previous prime is 42684373. The next prime is 42684401. The reversal of 42684377 is 77348624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42562576 + 121801 = 6524^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 42684377 - 2² = 42684373 is a prime.

It is a super-3 number, since 3×42684377³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42684371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21342188 + 21342189.

It is an arithmetic number, because the mean of its divisors is an integer number (21342189).

Almost surely, 2^42684377 is an apocalyptic number.

It is an amenable number.

42684377 is a deficient number, since it is larger than the sum of its proper divisors (1).

42684377 is an equidigital number, since it uses as much as digits as its factorization.

42684377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 41.

The square root of 42684377 is about 6533.3281717667. The cubic root of 42684377 is about 349.4805273353.

The spelling of 42684377 in words is "forty-two million, six hundred eighty-four thousand, three hundred seventy-seven".