42934387 has 2 divisors, whose sum is σ = 42934388. Its totient is φ = 42934386.

The previous prime is 42934379. The next prime is 42934427. The reversal of 42934387 is 78343924.

It is an a-pointer prime, because the next prime (42934427) can be obtained adding 42934387 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42934387 - 2³ = 42934379 is a prime.

It is not a weakly prime, because it can be changed into another prime (42934327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467193 + 21467194.

It is an arithmetic number, because the mean of its divisors is an integer number (21467194).

Almost surely, 2^42934387 is an apocalyptic number.

42934387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42934387 is an equidigital number, since it uses as much as digits as its factorization.

42934387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 42934387 is about 6552.4336700191. The cubic root of 42934387 is about 350.1615227258.

The spelling of 42934387 in words is "forty-two million, nine hundred thirty-four thousand, three hundred eighty-seven".