42976919 has 2 divisors, whose sum is σ = 42976920. Its totient is φ = 42976918.

The previous prime is 42976891. The next prime is 42976931. The reversal of 42976919 is 91967924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42976919 - 2²⁰ = 41928343 is a prime.

It is a super-2 number, since 2×42976919² = 3694031133465122, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42976019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21488459 + 21488460.

It is an arithmetic number, because the mean of its divisors is an integer number (21488460).

Almost surely, 2^42976919 is an apocalyptic number.

42976919 is a deficient number, since it is larger than the sum of its proper divisors (1).

42976919 is an equidigital number, since it uses as much as digits as its factorization.

42976919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 42976919 is about 6555.6783783221. The cubic root of 42976919 is about 350.2771111527.

The spelling of 42976919 in words is "forty-two million, nine hundred seventy-six thousand, nine hundred nineteen".