42524387 has 2 divisors, whose sum is σ = 42524388. Its totient is φ = 42524386.

The previous prime is 42524371. The next prime is 42524393. The reversal of 42524387 is 78342524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42524387 - 2⁴ = 42524371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42524347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21262193 + 21262194.

It is an arithmetic number, because the mean of its divisors is an integer number (21262194).

Almost surely, 2^42524387 is an apocalyptic number.

42524387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42524387 is an equidigital number, since it uses as much as digits as its factorization.

42524387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 35.

The square root of 42524387 is about 6521.0725344839. The cubic root of 42524387 is about 349.0433385424.

The spelling of 42524387 in words is "forty-two million, five hundred twenty-four thousand, three hundred eighty-seven".