2872042 has 4 divisors (see below), whose sum is σ = 4308066. Its totient is φ = 1436020.

The previous prime is 2872027. The next prime is 2872043. The reversal of 2872042 is 2402782.

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

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 19321 = 1689^2 + 139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2871998 and 2872016.

It is not an unprimeable number, because it can be changed into a prime (2872043) 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 as a sum of consecutive naturals, namely, 718009 + ... + 718012.

2^2872042 is an apocalyptic number.

2872042 is a deficient number, since it is larger than the sum of its proper divisors (1436024).

2872042 is a wasteful number, since it uses less digits than its factorization.

2872042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436023.

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

The square root of 2872042 is about 1694.7100046911. The cubic root of 2872042 is about 142.1445661220.

The spelling of 2872042 in words is "two million, eight hundred seventy-two thousand, forty-two".