1771112242 has 4 divisors (see below), whose sum is σ = 2656668366. Its totient is φ = 885556120.

The previous prime is 1771112141. The next prime is 1771112269. The reversal of 1771112242 is 2422111771.

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., 1086295681 + 684816561 = 32959^2 + 26169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1771112242.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 442778059 + ... + 442778062.

Almost surely, 2^1771112242 is an apocalyptic number.

1771112242 is a deficient number, since it is larger than the sum of its proper divisors (885556124).

1771112242 is an equidigital number, since it uses as much as digits as its factorization.

1771112242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885556123.

The product of its digits is 1568, while the sum is 28.

The square root of 1771112242 is about 42084.5843748040. The cubic root of 1771112242 is about 1209.8978221211.

The spelling of 1771112242 in words is "one billion, seven hundred seventy-one million, one hundred twelve thousand, two hundred forty-two".