42134939 has 16 divisors (see below), whose sum is σ = 52690176. Its totient is φ = 32733600.

The previous prime is 42134927. The next prime is 42134977. The reversal of 42134939 is 93943124.

It is a cyclic number.

It is not a de Polignac number, because 42134939 - 2⁴ = 42134923 is a prime.

It is a super-3 number, since 3×42134939³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42134899 and 42134908.

It is not an unprimeable number, because it can be changed into a prime (42134639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34904 + ... + 36090.

It is an arithmetic number, because the mean of its divisors is an integer number (3293136).

Almost surely, 2^42134939 is an apocalyptic number.

42134939 is a deficient number, since it is larger than the sum of its proper divisors (10555237).

42134939 is a wasteful number, since it uses less digits than its factorization.

42134939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666.

The product of its digits is 23328, while the sum is 35.

The square root of 42134939 is about 6491.1431196670. The cubic root of 42134939 is about 347.9745296680.

The spelling of 42134939 in words is "forty-two million, one hundred thirty-four thousand, nine hundred thirty-nine".