42863387 has 6 divisors (see below), whose sum is σ = 49861548. Its totient is φ = 36740004.

The previous prime is 42863383. The next prime is 42863393. The reversal of 42863387 is 78336824.

It is not a de Polignac number, because 42863387 - 2² = 42863383 is a prime.

It is a super-2 number, since 2×42863387² = 3674539890223538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42863383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437333 + ... + 437430.

It is an arithmetic number, because the mean of its divisors is an integer number (8310258).

Almost surely, 2^42863387 is an apocalyptic number.

42863387 is a deficient number, since it is larger than the sum of its proper divisors (6998161).

42863387 is an equidigital number, since it uses as much as digits as its factorization.

42863387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874777 (or 874770 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 42863387 is about 6547.0135939984. The cubic root of 42863387 is about 349.9683971465.

The spelling of 42863387 in words is "forty-two million, eight hundred sixty-three thousand, three hundred eighty-seven".