11142869 has 2 divisors, whose sum is σ = 11142870. Its totient is φ = 11142868.

The previous prime is 11142851. The next prime is 11142877. The reversal of 11142869 is 96824111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11142244 + 625 = 3338^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142869 - 2⁸ = 11142613 is a prime.

It is a super-2 number, since 2×11142869² = 248327059102322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11142839) 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, 5571434 + 5571435.

It is an arithmetic number, because the mean of its divisors is an integer number (5571435).

Almost surely, 2^11142869 is an apocalyptic number.

It is an amenable number.

11142869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142869 is an equidigital number, since it uses as much as digits as its factorization.

11142869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 11142869 is about 3338.0936176207. The cubic root of 11142869 is about 223.3567122379.

The spelling of 11142869 in words is "eleven million, one hundred forty-two thousand, eight hundred sixty-nine".