1871242 has 4 divisors (see below), whose sum is σ = 2806866. Its totient is φ = 935620.

The previous prime is 1871213. The next prime is 1871249. The reversal of 1871242 is 2421781.

It is a happy number.

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., 1147041 + 724201 = 1071^2 + 851^2 .

It is not an unprimeable number, because it can be changed into a prime (1871249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 467809 + ... + 467812.

2^1871242 is an apocalyptic number.

1871242 is a deficient number, since it is larger than the sum of its proper divisors (935624).

1871242 is an equidigital number, since it uses as much as digits as its factorization.

1871242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935623.

The product of its digits is 896, while the sum is 25.

The square root of 1871242 is about 1367.9334779148. The cubic root of 1871242 is about 123.2281661721.

The spelling of 1871242 in words is "one million, eight hundred seventy-one thousand, two hundred forty-two".