134421665 has 16 divisors (see below), whose sum is σ = 184574208. Its totient is φ = 92062656.

The previous prime is 134421659. The next prime is 134421671. The reversal of 134421665 is 566124431.

It is an interprime number because it is at equal distance from previous prime (134421659) and next prime (134421671).

It is not a de Polignac number, because 134421665 - 2⁴ = 134421649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35399 + ... + 39011.

It is an arithmetic number, because the mean of its divisors is an integer number (11535888).

Almost surely, 2^134421665 is an apocalyptic number.

It is an amenable number.

134421665 is a deficient number, since it is larger than the sum of its proper divisors (50152543).

134421665 is a wasteful number, since it uses less digits than its factorization.

134421665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its digits is 17280, while the sum is 32.

The square root of 134421665 is about 11594.0357511955. The cubic root of 134421665 is about 512.2591880754.

The spelling of 134421665 in words is "one hundred thirty-four million, four hundred twenty-one thousand, six hundred sixty-five".