134421023 has 16 divisors (see below), whose sum is σ = 155926944. Its totient is φ = 114524160.

The previous prime is 134421017. The next prime is 134421031. The reversal of 134421023 is 320124431.

It is a cyclic number.

It is not a de Polignac number, because 134421023 - 2¹⁸ = 134158879 is a prime.

It is a super-2 number, since 2×134421023² = 36138022848733058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134420986 and 134421004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134421823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46661 + ... + 49457.

It is an arithmetic number, because the mean of its divisors is an integer number (9745434).

Almost surely, 2^134421023 is an apocalyptic number.

134421023 is a deficient number, since it is larger than the sum of its proper divisors (21505921).

134421023 is a wasteful number, since it uses less digits than its factorization.

134421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 134421023 is about 11594.0080645133. The cubic root of 134421023 is about 512.2583725547.

Adding to 134421023 its reverse (320124431), we get a palindrome (454545454).

The spelling of 134421023 in words is "one hundred thirty-four million, four hundred twenty-one thousand, twenty-three".