2991642 has 16 divisors (see below), whose sum is σ = 6016032. Its totient is φ = 991760.

The previous prime is 2991631. The next prime is 2991649. The reversal of 2991642 is 2461992.

2991642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) 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 (2991649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84 + ... + 2447.

It is an arithmetic number, because the mean of its divisors is an integer number (376002).

2^2991642 is an apocalyptic number.

2991642 is an abundant number, since it is smaller than the sum of its proper divisors (3024390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2991642 is a wasteful number, since it uses less digits than its factorization.

2991642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its digits is 7776, while the sum is 33.

The square root of 2991642 is about 1729.6363779708. The cubic root of 2991642 is about 144.0908955450.

The spelling of 2991642 in words is "two million, nine hundred ninety-one thousand, six hundred forty-two".