42134069 has 4 divisors (see below), whose sum is σ = 42551340. Its totient is φ = 41716800.

The previous prime is 42134051. The next prime is 42134087. The reversal of 42134069 is 96043124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42134051) and next prime (42134087).

It can be written as a sum of positive squares in 2 ways, for example, as 39853969 + 2280100 = 6313^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 42134069 - 2⁸ = 42133813 is a prime.

It is a super-2 number, since 2×42134069² = 3550559540993522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42134269) 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, 208484 + ... + 208685.

It is an arithmetic number, because the mean of its divisors is an integer number (10637835).

Almost surely, 2^42134069 is an apocalyptic number.

It is an amenable number.

42134069 is a deficient number, since it is larger than the sum of its proper divisors (417271).

42134069 is a wasteful number, since it uses less digits than its factorization.

42134069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417270.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 42134069 is about 6491.0761049305. The cubic root of 42134069 is about 347.9721346649.

The spelling of 42134069 in words is "forty-two million, one hundred thirty-four thousand, sixty-nine".