134020445 has 16 divisors (see below), whose sum is σ = 173940480. Its totient is φ = 98543424.

The previous prime is 134020441. The next prime is 134020457. The reversal of 134020445 is 544020431.

It is a cyclic number.

It is not a de Polignac number, because 134020445 - 2² = 134020441 is a prime.

It is a super-2 number, since 2×134020445² = 35922959355996050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 134020445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134020441) 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, 11222 + ... + 19848.

It is an arithmetic number, because the mean of its divisors is an integer number (10871280).

Almost surely, 2^134020445 is an apocalyptic number.

It is an amenable number.

134020445 is a deficient number, since it is larger than the sum of its proper divisors (39920035).

134020445 is a wasteful number, since it uses less digits than its factorization.

134020445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8884.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 134020445 is about 11576.7199586066. The cubic root of 134020445 is about 511.7490186827.

Adding to 134020445 its reverse (544020431), we get a palindrome (678040876).

The spelling of 134020445 in words is "one hundred thirty-four million, twenty thousand, four hundred forty-five".