42024457 has 2 divisors, whose sum is σ = 42024458. Its totient is φ = 42024456.

The previous prime is 42024401. The next prime is 42024491. The reversal of 42024457 is 75442024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31854736 + 10169721 = 5644^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 42024457 - 2¹⁹ = 41500169 is a prime.

It is a super-2 number, since 2×42024457² = 3532109972289698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42022457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21012228 + 21012229.

It is an arithmetic number, because the mean of its divisors is an integer number (21012229).

Almost surely, 2^42024457 is an apocalyptic number.

It is an amenable number.

42024457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42024457 is an equidigital number, since it uses as much as digits as its factorization.

42024457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 42024457 is about 6482.6273223131. The cubic root of 42024457 is about 347.6701221773.

The spelling of 42024457 in words is "forty-two million, twenty-four thousand, four hundred fifty-seven".