42047573 has 2 divisors, whose sum is σ = 42047574. Its totient is φ = 42047572.

The previous prime is 42047569. The next prime is 42047581. The reversal of 42047573 is 37574024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27857284 + 14190289 = 5278^2 + 3767^2 .

It is a cyclic number.

It is not a de Polignac number, because 42047573 - 2² = 42047569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42047773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21023786 + 21023787.

It is an arithmetic number, because the mean of its divisors is an integer number (21023787).

Almost surely, 2^42047573 is an apocalyptic number.

It is an amenable number.

42047573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42047573 is an equidigital number, since it uses as much as digits as its factorization.

42047573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 42047573 is about 6484.4099962911. The cubic root of 42047573 is about 347.7338570434.

The spelling of 42047573 in words is "forty-two million, forty-seven thousand, five hundred seventy-three".