42075247 has 2 divisors, whose sum is σ = 42075248. Its totient is φ = 42075246.

The previous prime is 42075217. The next prime is 42075301. The reversal of 42075247 is 74257024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42075247 - 2¹⁹ = 41550959 is a prime.

It is a super-2 number, since 2×42075247² = 3540652820222018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42075217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21037623 + 21037624.

It is an arithmetic number, because the mean of its divisors is an integer number (21037624).

Almost surely, 2^42075247 is an apocalyptic number.

42075247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42075247 is an equidigital number, since it uses as much as digits as its factorization.

42075247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 42075247 is about 6486.5435325757. The cubic root of 42075247 is about 347.8101284003.

The spelling of 42075247 in words is "forty-two million, seventy-five thousand, two hundred forty-seven".