2987123 has 4 divisors (see below), whose sum is σ = 3144360. Its totient is φ = 2829888.

The previous prime is 2987113. The next prime is 2987141. The reversal of 2987123 is 3217892.

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 2987123 - 2¹⁸ = 2724979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2987123.

It is not an unprimeable number, because it can be changed into a prime (2987113) 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, 78590 + ... + 78627.

It is an arithmetic number, because the mean of its divisors is an integer number (786090).

2^2987123 is an apocalyptic number.

2987123 is a deficient number, since it is larger than the sum of its proper divisors (157237).

2987123 is a wasteful number, since it uses less digits than its factorization.

2987123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157236.

The product of its digits is 6048, while the sum is 32.

The square root of 2987123 is about 1728.3295403366. The cubic root of 2987123 is about 144.0183072146.

The spelling of 2987123 in words is "two million, nine hundred eighty-seven thousand, one hundred twenty-three".