1972842 has 16 divisors (see below), whose sum is σ = 4013280. Its totient is φ = 646352.

The previous prime is 1972829. The next prime is 1972847. The reversal of 1972842 is 2482791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972847) 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, 2433 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (250830).

2^1972842 is an apocalyptic number.

1972842 is an abundant number, since it is smaller than the sum of its proper divisors (2040438).

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

1972842 is a wasteful number, since it uses less digits than its factorization.

1972842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637.

The product of its digits is 8064, while the sum is 33.

The square root of 1972842 is about 1404.5789404658. The cubic root of 1972842 is about 125.4192217863.

The spelling of 1972842 in words is "one million, nine hundred seventy-two thousand, eight hundred forty-two".