2642387 has 16 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 2219040.

The previous prime is 2642383. The next prime is 2642389. The reversal of 2642387 is 7832462.

It is a cyclic number.

It is not a de Polignac number, because 2642387 - 2² = 2642383 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 (2642383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9689 + ... + 9957.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

2^2642387 is an apocalyptic number.

2642387 is a deficient number, since it is larger than the sum of its proper divisors (468013).

2642387 is a wasteful number, since it uses less digits than its factorization.

2642387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its digits is 16128, while the sum is 32.

The square root of 2642387 is about 1625.5420634361. The cubic root of 2642387 is about 138.2501065479.

The spelling of 2642387 in words is "two million, six hundred forty-two thousand, three hundred eighty-seven".