1711042821 has 6 divisors (see below), whose sum is σ = 2471506310. Its totient is φ = 1140695208.

The previous prime is 1711042813. The next prime is 1711042829. The reversal of 1711042821 is 1282401171.

It is an interprime number because it is at equal distance from previous prime (1711042813) and next prime (1711042829).

It can be written as a sum of positive squares in only one way, i.e., 1076758596 + 634284225 = 32814^2 + 25185^2 .

It is not a de Polignac number, because 1711042821 - 2³ = 1711042813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1711042829) 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, 95057926 + ... + 95057943.

Almost surely, 2^1711042821 is an apocalyptic number.

It is an amenable number.

1711042821 is a deficient number, since it is larger than the sum of its proper divisors (760463489).

1711042821 is a wasteful number, since it uses less digits than its factorization.

1711042821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190115875 (or 190115872 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1711042821 is about 41364.7533656373. The cubic root of 1711042821 is about 1196.0618168162.

Adding to 1711042821 its reverse (1282401171), we get a palindrome (2993443992).

The spelling of 1711042821 in words is "one billion, seven hundred eleven million, forty-two thousand, eight hundred twenty-one".