42824149 has 2 divisors, whose sum is σ = 42824150. Its totient is φ = 42824148.

The previous prime is 42824107. The next prime is 42824153. The reversal of 42824149 is 94142824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39917124 + 2907025 = 6318^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 42824149 - 2⁷ = 42824021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42824179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21412074 + 21412075.

It is an arithmetic number, because the mean of its divisors is an integer number (21412075).

Almost surely, 2^42824149 is an apocalyptic number.

It is an amenable number.

42824149 is a deficient number, since it is larger than the sum of its proper divisors (1).

42824149 is an equidigital number, since it uses as much as digits as its factorization.

42824149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 42824149 is about 6544.0162744296. The cubic root of 42824149 is about 349.8615751923.

The spelling of 42824149 in words is "forty-two million, eight hundred twenty-four thousand, one hundred forty-nine".