134407021 has 8 divisors (see below), whose sum is σ = 154818560. Its totient is φ = 114298128.

The previous prime is 134406997. The next prime is 134407073. The reversal of 134407021 is 120704431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 134407021 - 2¹¹ = 134404973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134406983 and 134407001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134407081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74706 + ... + 76483.

It is an arithmetic number, because the mean of its divisors is an integer number (19352320).

Almost surely, 2^134407021 is an apocalyptic number.

It is an amenable number.

134407021 is a deficient number, since it is larger than the sum of its proper divisors (20411539).

134407021 is a wasteful number, since it uses less digits than its factorization.

134407021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151323.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 134407021 is about 11593.4042023903. The cubic root of 134407021 is about 512.2405854293.

The spelling of 134407021 in words is "one hundred thirty-four million, four hundred seven thousand, twenty-one".