133421434393 has 8 divisors (see below), whose sum is σ = 148639264200. Its totient is φ = 118911410688.

The previous prime is 133421434343. The next prime is 133421434397. The reversal of 133421434393 is 393434124331.

It can be written as a sum of positive squares in 4 ways, for example, as 1469418889 + 131952015504 = 38333^2 + 363252^2 .

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

It is not a de Polignac number, because 133421434393 - 2²⁹ = 132884563481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133421434397) 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, 176951128 + ... + 176951881.

It is an arithmetic number, because the mean of its divisors is an integer number (18579908025).

Almost surely, 2^133421434393 is an apocalyptic number.

133421434393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133421434393 is a deficient number, since it is larger than the sum of its proper divisors (15217829807).

133421434393 is a wasteful number, since it uses less digits than its factorization.

133421434393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353903051.

The product of its digits is 279936, while the sum is 40.

The spelling of 133421434393 in words is "one hundred thirty-three billion, four hundred twenty-one million, four hundred thirty-four thousand, three hundred ninety-three".