42573173 has 2 divisors, whose sum is σ = 42573174. Its totient is φ = 42573172.

The previous prime is 42573127. The next prime is 42573197. The reversal of 42573173 is 37137524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36457444 + 6115729 = 6038^2 + 2473^2 .

It is a cyclic number.

It is not a de Polignac number, because 42573173 - 2⁶ = 42573109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42575173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21286586 + 21286587.

It is an arithmetic number, because the mean of its divisors is an integer number (21286587).

Almost surely, 2^42573173 is an apocalyptic number.

It is an amenable number.

42573173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42573173 is an equidigital number, since it uses as much as digits as its factorization.

42573173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 42573173 is about 6524.8121045744. The cubic root of 42573173 is about 349.1767672384.

The spelling of 42573173 in words is "forty-two million, five hundred seventy-three thousand, one hundred seventy-three".