42165377 has 2 divisors, whose sum is σ = 42165378. Its totient is φ = 42165376.

The previous prime is 42165373. The next prime is 42165401. The reversal of 42165377 is 77356124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29767936 + 12397441 = 5456^2 + 3521^2 .

It is a cyclic number.

It is not a de Polignac number, because 42165377 - 2² = 42165373 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42165373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082688 + 21082689.

It is an arithmetic number, because the mean of its divisors is an integer number (21082689).

Almost surely, 2^42165377 is an apocalyptic number.

It is an amenable number.

42165377 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165377 is an equidigital number, since it uses as much as digits as its factorization.

42165377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 42165377 is about 6493.4872757248. The cubic root of 42165377 is about 348.0583009954.

The spelling of 42165377 in words is "forty-two million, one hundred sixty-five thousand, three hundred seventy-seven".