1071842121 has 27 divisors (see below), whose sum is σ = 1802142381. Its totient is φ = 612088344.

The previous prime is 1071842119. The next prime is 1071842171. The reversal of 1071842121 is 1212481701.

The square root of 1071842121 is 32739.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1071842121 - 2¹ = 1071842119 is a prime.

It is a super-2 number, since 2×1071842121² = 2297691064699557282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071842171) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 686740 + ... + 688298.

Almost surely, 2^1071842121 is an apocalyptic number.

1071842121 is the 32739-th square number.

1071842121 is the 16370-th centered octagonal number.

It is an amenable number.

1071842121 is a deficient number, since it is larger than the sum of its proper divisors (730300260).

1071842121 is an frugal number, since it uses more digits than its factorization.

1071842121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138 (or 1569 counting only the distinct ones).

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

The cubic root of 1071842121 is about 1023.3957441827.

The spelling of 1071842121 in words is "one billion, seventy-one million, eight hundred forty-two thousand, one hundred twenty-one".