1947242 has 16 divisors (see below), whose sum is σ = 3240864. Its totient is φ = 870000.

The previous prime is 1947241. The next prime is 1947247. The reversal of 1947242 is 2427491.

It is not an unprimeable number, because it can be changed into a prime (1947241) 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 in 7 ways as a sum of consecutive naturals, for example, 617 + ... + 2067.

It is an arithmetic number, because the mean of its divisors is an integer number (202554).

2^1947242 is an apocalyptic number.

1947242 is a deficient number, since it is larger than the sum of its proper divisors (1293622).

1947242 is a wasteful number, since it uses less digits than its factorization.

1947242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its digits is 4032, while the sum is 29.

The square root of 1947242 is about 1395.4361325406. The cubic root of 1947242 is about 124.8743697787.

Subtracting 1947242 from its reverse (2427491), we obtain a square (480249 = 693²).

It can be divided in two parts, 1947 and 242, that multiplied together give a palindrome (471174).

The spelling of 1947242 in words is "one million, nine hundred forty-seven thousand, two hundred forty-two".