42976859 has 2 divisors, whose sum is σ = 42976860. Its totient is φ = 42976858.

The previous prime is 42976837. The next prime is 42976861. The reversal of 42976859 is 95867924.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42976859 - 2²⁰ = 41928283 is a prime.

It is a super-3 number, since 3×42976859³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 42976861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42976889) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21488429 + 21488430.

It is an arithmetic number, because the mean of its divisors is an integer number (21488430).

Almost surely, 2^42976859 is an apocalyptic number.

42976859 is a deficient number, since it is larger than the sum of its proper divisors (1).

42976859 is an equidigital number, since it uses as much as digits as its factorization.

42976859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 42976859 is about 6555.6738021351. The cubic root of 42976859 is about 350.2769481455.

The spelling of 42976859 in words is "forty-two million, nine hundred seventy-six thousand, eight hundred fifty-nine".