144342139 has 2 divisors, whose sum is σ = 144342140. Its totient is φ = 144342138.

The previous prime is 144342137. The next prime is 144342151. The reversal of 144342139 is 931243441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144342139 - 2¹ = 144342137 is a prime.

Together with 144342137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 144342139.

It is not a weakly prime, because it can be changed into another prime (144342131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72171069 + 72171070.

It is an arithmetic number, because the mean of its divisors is an integer number (72171070).

Almost surely, 2^144342139 is an apocalyptic number.

144342139 is a deficient number, since it is larger than the sum of its proper divisors (1).

144342139 is an equidigital number, since it uses as much as digits as its factorization.

144342139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 144342139 is about 12014.2473338949. The cubic root of 144342139 is about 524.5630698756.

The spelling of 144342139 in words is "one hundred forty-four million, three hundred forty-two thousand, one hundred thirty-nine".