42424042387 has 2 divisors, whose sum is σ = 42424042388. Its totient is φ = 42424042386.

The previous prime is 42424042369. The next prime is 42424042471. The reversal of 42424042387 is 78324042424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42424042387 - 2³⁵ = 8064304019 is a prime.

It is not a weakly prime, because it can be changed into another prime (42424042307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212021193 + 21212021194.

It is an arithmetic number, because the mean of its divisors is an integer number (21212021194).

Almost surely, 2^42424042387 is an apocalyptic number.

42424042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424042387 is an equidigital number, since it uses as much as digits as its factorization.

42424042387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 40.

The spelling of 42424042387 in words is "forty-two billion, four hundred twenty-four million, forty-two thousand, three hundred eighty-seven".