42451967 has 2 divisors, whose sum is σ = 42451968. Its totient is φ = 42451966.

The previous prime is 42451963. The next prime is 42451973. The reversal of 42451967 is 76915424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42451967 - 2² = 42451963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42451967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42451961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225983 + 21225984.

It is an arithmetic number, because the mean of its divisors is an integer number (21225984).

Almost surely, 2^42451967 is an apocalyptic number.

42451967 is a deficient number, since it is larger than the sum of its proper divisors (1).

42451967 is an equidigital number, since it uses as much as digits as its factorization.

42451967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 42451967 is about 6515.5174007902. The cubic root of 42451967 is about 348.8450830357.

The spelling of 42451967 in words is "forty-two million, four hundred fifty-one thousand, nine hundred sixty-seven".