2542687 has 8 divisors (see below), whose sum is σ = 2916000. Its totient is φ = 2171904.

The previous prime is 2542681. The next prime is 2542699. The reversal of 2542687 is 7862452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2542687 is a prime.

It is a Duffinian number.

2542687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2739 + ... + 3547.

It is an arithmetic number, because the mean of its divisors is an integer number (364500).

2^2542687 is an apocalyptic number.

2542687 is a deficient number, since it is larger than the sum of its proper divisors (373313).

2542687 is an equidigital number, since it uses as much as digits as its factorization.

2542687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its digits is 26880, while the sum is 34.

The square root of 2542687 is about 1594.5805090995. The cubic root of 2542687 is about 136.4889944478.

The spelling of 2542687 in words is "two million, five hundred forty-two thousand, six hundred eighty-seven".