32543002421 has 4 divisors (see below), whose sum is σ = 32543714700. Its totient is φ = 32542290144.

The previous prime is 32543002417. The next prime is 32543002433. The reversal of 32543002421 is 12420034523.

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 4084999396 + 28458003025 = 63914^2 + 168695^2 .

It is a cyclic number.

It is not a de Polignac number, because 32543002421 - 2² = 32543002417 is a prime.

It is a super-2 number, since 2×32543002421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32543002441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282536 + ... + 380673.

It is an arithmetic number, because the mean of its divisors is an integer number (8135928675).

Almost surely, 2^32543002421 is an apocalyptic number.

It is an amenable number.

32543002421 is a deficient number, since it is larger than the sum of its proper divisors (712279).

32543002421 is an equidigital number, since it uses as much as digits as its factorization.

32543002421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712278.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 32543002421 its reverse (12420034523), we get a palindrome (44963036944).

The spelling of 32543002421 in words is "thirty-two billion, five hundred forty-three million, two thousand, four hundred twenty-one".