1957842 has 12 divisors (see below), whose sum is σ = 4242030. Its totient is φ = 652608.

The previous prime is 1957831. The next prime is 1957847. The reversal of 1957842 is 2487591.

It can be written as a sum of positive squares in only one way, i.e., 1718721 + 239121 = 1311^2 + 489^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1957797 and 1957806.

It is not an unprimeable number, because it can be changed into a prime (1957847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54367 + ... + 54402.

2^1957842 is an apocalyptic number.

1957842 is an abundant number, since it is smaller than the sum of its proper divisors (2284188).

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

1957842 is a wasteful number, since it uses less digits than its factorization.

1957842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108777 (or 108774 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1957842 is about 1399.2290734544. The cubic root of 1957842 is about 125.1005484318.

The spelling of 1957842 in words is "one million, nine hundred fifty-seven thousand, eight hundred forty-two".