134442399 has 16 divisors (see below), whose sum is σ = 220623872. Its totient is φ = 70914528.

The previous prime is 134442389. The next prime is 134442431. The reversal of 134442399 is 993244431.

134442399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 134442399 - 2²¹ = 132345247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134442389) 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, 245959 + ... + 246504.

It is an arithmetic number, because the mean of its divisors is an integer number (13788992).

Almost surely, 2^134442399 is an apocalyptic number.

134442399 is a deficient number, since it is larger than the sum of its proper divisors (86181473).

134442399 is a wasteful number, since it uses less digits than its factorization.

134442399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492486.

The product of its digits is 93312, while the sum is 39.

The square root of 134442399 is about 11594.9298833585. The cubic root of 134442399 is about 512.2855246929.

The spelling of 134442399 in words is "one hundred thirty-four million, four hundred forty-two thousand, three hundred ninety-nine".