42920443 has 2 divisors, whose sum is σ = 42920444. Its totient is φ = 42920442.

The previous prime is 42920431. The next prime is 42920453. The reversal of 42920443 is 34402924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42920443 - 2¹³ = 42912251 is a prime.

It is not a weakly prime, because it can be changed into another prime (42920453) 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, 21460221 + 21460222.

It is an arithmetic number, because the mean of its divisors is an integer number (21460222).

Almost surely, 2^42920443 is an apocalyptic number.

42920443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42920443 is an equidigital number, since it uses as much as digits as its factorization.

42920443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 42920443 is about 6551.3695514755. The cubic root of 42920443 is about 350.1236107606.

The spelling of 42920443 in words is "forty-two million, nine hundred twenty thousand, four hundred forty-three".