142233109 has 2 divisors, whose sum is σ = 142233110. Its totient is φ = 142233108.

The previous prime is 142233103. The next prime is 142233163. The reversal of 142233109 is 901332241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 64352484 = 8825^2 + 8022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142233109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142233103) 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, 71116554 + 71116555.

It is an arithmetic number, because the mean of its divisors is an integer number (71116555).

Almost surely, 2^142233109 is an apocalyptic number.

It is an amenable number.

142233109 is a deficient number, since it is larger than the sum of its proper divisors (1).

142233109 is an equidigital number, since it uses as much as digits as its factorization.

142233109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 142233109 is about 11926.1523132987. The cubic root of 142233109 is about 521.9956706579.

The spelling of 142233109 in words is "one hundred forty-two million, two hundred thirty-three thousand, one hundred nine".