1142969 has 2 divisors, whose sum is σ = 1142970. Its totient is φ = 1142968.

The previous prime is 1142959. The next prime is 1142971. The reversal of 1142969 is 9692411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 67600 = 1037^2 + 260^2 .

It is an emirp because it is prime and its reverse (9692411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142969 is a prime.

It is a super-2 number, since 2×1142969² = 2612756269922, which contains 22 as substring.

Together with 1142971, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1142909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571484 + 571485.

It is an arithmetic number, because the mean of its divisors is an integer number (571485).

2^1142969 is an apocalyptic number.

It is an amenable number.

1142969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142969 is an equidigital number, since it uses as much as digits as its factorization.

1142969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 1142969 is about 1069.0972827577. The cubic root of 1142969 is about 104.5550025993. Note that the first 3 decimals are identical.

The spelling of 1142969 in words is "one million, one hundred forty-two thousand, nine hundred sixty-nine".