142054109 has 2 divisors, whose sum is σ = 142054110. Its totient is φ = 142054108.

The previous prime is 142054079. The next prime is 142054117. The reversal of 142054109 is 901450241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 26491609 = 10750^2 + 5147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142054109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142054169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71027054 + 71027055.

It is an arithmetic number, because the mean of its divisors is an integer number (71027055).

Almost surely, 2^142054109 is an apocalyptic number.

It is an amenable number.

142054109 is a deficient number, since it is larger than the sum of its proper divisors (1).

142054109 is an equidigital number, since it uses as much as digits as its factorization.

142054109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 142054109 is about 11918.6454347799. The cubic root of 142054109 is about 521.7766019990.

The spelling of 142054109 in words is "one hundred forty-two million, fifty-four thousand, one hundred nine".