134423013021 has 32 divisors (see below), whose sum is σ = 206045614080. Its totient is φ = 77154792000.

The previous prime is 134423013017. The next prime is 134423013047. The reversal of 134423013021 is 120310324431.

It is a happy number.

It is not a de Polignac number, because 134423013021 - 2² = 134423013017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134423012982 and 134423013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134423013061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 800101 + ... + 953418.

It is an arithmetic number, because the mean of its divisors is an integer number (6438925440).

Almost surely, 2^134423013021 is an apocalyptic number.

134423013021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134423013021 is a deficient number, since it is larger than the sum of its proper divisors (71622601059).

134423013021 is a wasteful number, since it uses less digits than its factorization.

134423013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753657.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 134423013021 its reverse (120310324431), we get a palindrome (254733337452).

The spelling of 134423013021 in words is "one hundred thirty-four billion, four hundred twenty-three million, thirteen thousand, twenty-one".