42080947 has 2 divisors, whose sum is σ = 42080948. Its totient is φ = 42080946.

The previous prime is 42080921. The next prime is 42080957. The reversal of 42080947 is 74908024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42080947 - 2¹⁹ = 41556659 is a prime.

It is a super-2 number, since 2×42080947² = 3541612200833618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42080957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21040473 + 21040474.

It is an arithmetic number, because the mean of its divisors is an integer number (21040474).

Almost surely, 2^42080947 is an apocalyptic number.

42080947 is a deficient number, since it is larger than the sum of its proper divisors (1).

42080947 is an equidigital number, since it uses as much as digits as its factorization.

42080947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 42080947 is about 6486.9828888321. The cubic root of 42080947 is about 347.8258338198.

The spelling of 42080947 in words is "forty-two million, eighty thousand, nine hundred forty-seven".