134156239 has 4 divisors (see below), whose sum is σ = 153321424. Its totient is φ = 114991056.

The previous prime is 134156227. The next prime is 134156249. The reversal of 134156239 is 932651431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932651431 = 73 ⋅12776047.

It is a cyclic number.

It is not a de Polignac number, because 134156239 - 2⁹ = 134155727 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134156249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9582582 + ... + 9582595.

It is an arithmetic number, because the mean of its divisors is an integer number (38330356).

Almost surely, 2^134156239 is an apocalyptic number.

134156239 is a deficient number, since it is larger than the sum of its proper divisors (19165185).

134156239 is an equidigital number, since it uses as much as digits as its factorization.

134156239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19165184.

The product of its digits is 19440, while the sum is 34.

The square root of 134156239 is about 11582.5834337595. The cubic root of 134156239 is about 511.9218007503.

The spelling of 134156239 in words is "one hundred thirty-four million, one hundred fifty-six thousand, two hundred thirty-nine".