142232869 has 2 divisors, whose sum is σ = 142232870. Its totient is φ = 142232868.

The previous prime is 142232843. The next prime is 142232887. The reversal of 142232869 is 968232241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 36759969 = 10270^2 + 6063^2 .

It is a cyclic number.

It is not a de Polignac number, because 142232869 - 2⁵ = 142232837 is a prime.

It is a super-2 number, since 2×142232869² = 40460378047942322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142232819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71116434 + 71116435.

It is an arithmetic number, because the mean of its divisors is an integer number (71116435).

Almost surely, 2^142232869 is an apocalyptic number.

It is an amenable number.

142232869 is a deficient number, since it is larger than the sum of its proper divisors (1).

142232869 is an equidigital number, since it uses as much as digits as its factorization.

142232869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 142232869 is about 11926.1422513737. The cubic root of 142232869 is about 521.9953770577.

The spelling of 142232869 in words is "one hundred forty-two million, two hundred thirty-two thousand, eight hundred sixty-nine".