134242839 has 30 divisors (see below), whose sum is σ = 203974056. Its totient is φ = 87985440.

The previous prime is 134242819. The next prime is 134242853. The reversal of 134242839 is 938242431.

It is not a de Polignac number, because 134242839 - 2⁵ = 134242807 is a prime.

It is a super-2 number, since 2×134242839² = 36042279645559842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134242819) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 431494 + ... + 431804.

Almost surely, 2^134242839 is an apocalyptic number.

134242839 is a deficient number, since it is larger than the sum of its proper divisors (69731217).

134242839 is an frugal number, since it uses more digits than its factorization.

134242839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 387 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 134242839 is about 11586.3212021763. The cubic root of 134242839 is about 512.0319282966.

The spelling of 134242839 in words is "one hundred thirty-four million, two hundred forty-two thousand, eight hundred thirty-nine".