42387667 has 4 divisors (see below), whose sum is σ = 48443056. Its totient is φ = 36332280.

The previous prime is 42387659. The next prime is 42387677. The reversal of 42387667 is 76678324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42387667 - 2³ = 42387659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42387677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027684 + ... + 3027697.

It is an arithmetic number, because the mean of its divisors is an integer number (12110764).

Almost surely, 2^42387667 is an apocalyptic number.

42387667 is a deficient number, since it is larger than the sum of its proper divisors (6055389).

42387667 is an equidigital number, since it uses as much as digits as its factorization.

42387667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055388.

The product of its digits is 338688, while the sum is 43.

The square root of 42387667 is about 6510.5811568554. The cubic root of 42387667 is about 348.6688676179.

The spelling of 42387667 in words is "forty-two million, three hundred eighty-seven thousand, six hundred sixty-seven".