134432031421 has 4 divisors (see below), whose sum is σ = 136273566172. Its totient is φ = 132590496672.

The previous prime is 134432031379. The next prime is 134432031431. The reversal of 134432031421 is 124130234431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104299932025 + 30132099396 = 322955^2 + 173586^2 .

It is a cyclic number.

It is not a de Polignac number, because 134432031421 - 2²¹ = 134429934269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134432031421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134432031431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920767266 + ... + 920767411.

It is an arithmetic number, because the mean of its divisors is an integer number (34068391543).

Almost surely, 2^134432031421 is an apocalyptic number.

It is an amenable number.

134432031421 is a deficient number, since it is larger than the sum of its proper divisors (1841534751).

134432031421 is an equidigital number, since it uses as much as digits as its factorization.

134432031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841534750.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 134432031421 its reverse (124130234431), we get a palindrome (258562265852).

The spelling of 134432031421 in words is "one hundred thirty-four billion, four hundred thirty-two million, thirty-one thousand, four hundred twenty-one".