133567342421 has 4 divisors (see below), whose sum is σ = 133675320492. Its totient is φ = 133459364352.

The previous prime is 133567342409. The next prime is 133567342423. The reversal of 133567342421 is 124243765331.

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 45307251025 + 88260091396 = 212855^2 + 297086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133567342421 is a prime.

It is a super-2 number, since 2×133567342421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133567342423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53987180 + ... + 53989653.

It is an arithmetic number, because the mean of its divisors is an integer number (33418830123).

Almost surely, 2^133567342421 is an apocalyptic number.

It is an amenable number.

133567342421 is a deficient number, since it is larger than the sum of its proper divisors (107978071).

133567342421 is a wasteful number, since it uses less digits than its factorization.

133567342421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107978070.

The product of its digits is 362880, while the sum is 41.

The spelling of 133567342421 in words is "one hundred thirty-three billion, five hundred sixty-seven million, three hundred forty-two thousand, four hundred twenty-one".