142344109 has 2 divisors, whose sum is σ = 142344110. Its totient is φ = 142344108.

The previous prime is 142344101. The next prime is 142344131. The reversal of 142344109 is 901443241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140896900 + 1447209 = 11870^2 + 1203^2 .

It is a cyclic number.

It is not a de Polignac number, because 142344109 - 2³ = 142344101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142344101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71172054 + 71172055.

It is an arithmetic number, because the mean of its divisors is an integer number (71172055).

Almost surely, 2^142344109 is an apocalyptic number.

It is an amenable number.

142344109 is a deficient number, since it is larger than the sum of its proper divisors (1).

142344109 is an equidigital number, since it uses as much as digits as its factorization.

142344109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 142344109 is about 11930.8050440865. The cubic root of 142344109 is about 522.1314253911.

The spelling of 142344109 in words is "one hundred forty-two million, three hundred forty-four thousand, one hundred nine".