1142052169 has 2 divisors, whose sum is σ = 1142052170. Its totient is φ = 1142052168.

The previous prime is 1142052167. The next prime is 1142052227. The reversal of 1142052169 is 9612502411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 593555769 + 548496400 = 24363^2 + 23420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142052169 - 2¹ = 1142052167 is a prime.

It is a super-2 number, since 2×1142052169² = 2608566313435209122, which contains 22 as substring.

Together with 1142052167, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1142052169.

It is not a weakly prime, because it can be changed into another prime (1142052167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571026084 + 571026085.

It is an arithmetic number, because the mean of its divisors is an integer number (571026085).

Almost surely, 2^1142052169 is an apocalyptic number.

It is an amenable number.

1142052169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142052169 is an equidigital number, since it uses as much as digits as its factorization.

1142052169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1142052169 is about 33794.2623680411. The cubic root of 1142052169 is about 1045.2703890417.

The spelling of 1142052169 in words is "one billion, one hundred forty-two million, fifty-two thousand, one hundred sixty-nine".