42349387 has 2 divisors, whose sum is σ = 42349388. Its totient is φ = 42349386.

The previous prime is 42349361. The next prime is 42349393. The reversal of 42349387 is 78394324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42349387 - 2⁷ = 42349259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42349687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21174693 + 21174694.

It is an arithmetic number, because the mean of its divisors is an integer number (21174694).

Almost surely, 2^42349387 is an apocalyptic number.

42349387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42349387 is an equidigital number, since it uses as much as digits as its factorization.

42349387 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 42349387 is about 6507.6406630975. The cubic root of 42349387 is about 348.5638758825.

The spelling of 42349387 in words is "forty-two million, three hundred forty-nine thousand, three hundred eighty-seven".