4240087 has 4 divisors (see below), whose sum is σ = 4376896. Its totient is φ = 4103280.

The previous prime is 4240079. The next prime is 4240091. The reversal of 4240087 is 7800424.

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 4240087 - 2³ = 4240079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68358 + ... + 68419.

It is an arithmetic number, because the mean of its divisors is an integer number (1094224).

Almost surely, 2^4240087 is an apocalyptic number.

4240087 is a deficient number, since it is larger than the sum of its proper divisors (136809).

4240087 is a wasteful number, since it uses less digits than its factorization.

4240087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136808.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 4240087 is about 2059.1471535565. The cubic root of 4240087 is about 161.8545537003.

The spelling of 4240087 in words is "four million, two hundred forty thousand, eighty-seven".