2771842 has 4 divisors (see below), whose sum is σ = 4157766. Its totient is φ = 1385920.

The previous prime is 2771837. The next prime is 2771843. The reversal of 2771842 is 2481772.

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., 2692881 + 78961 = 1641^2 + 281^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2771843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692959 + ... + 692962.

2^2771842 is an apocalyptic number.

2771842 is a deficient number, since it is larger than the sum of its proper divisors (1385924).

2771842 is a wasteful number, since it uses less digits than its factorization.

2771842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385923.

The product of its digits is 6272, while the sum is 31.

The square root of 2771842 is about 1664.8849810122. The cubic root of 2771842 is about 140.4719109005.

The spelling of 2771842 in words is "two million, seven hundred seventy-one thousand, eight hundred forty-two".