42842377 has 2 divisors, whose sum is σ = 42842378. Its totient is φ = 42842376.

The previous prime is 42842369. The next prime is 42842383. The reversal of 42842377 is 77324824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32672656 + 10169721 = 5716^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 42842377 - 2³ = 42842369 is a prime.

It is not a weakly prime, because it can be changed into another prime (42842357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21421188 + 21421189.

It is an arithmetic number, because the mean of its divisors is an integer number (21421189).

Almost surely, 2^42842377 is an apocalyptic number.

It is an amenable number.

42842377 is a deficient number, since it is larger than the sum of its proper divisors (1).

42842377 is an equidigital number, since it uses as much as digits as its factorization.

42842377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 37.

The square root of 42842377 is about 6545.4088489566. The cubic root of 42842377 is about 349.9112074078.

The spelling of 42842377 in words is "forty-two million, eight hundred forty-two thousand, three hundred seventy-seven".