32142120421 has 4 divisors (see below), whose sum is σ = 32357839500. Its totient is φ = 31926401344.

The previous prime is 32142120419. The next prime is 32142120481. The reversal of 32142120421 is 12402124123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12402124123 = 6263 ⋅1980221.

It can be written as a sum of positive squares in 2 ways, for example, as 4057053025 + 28085067396 = 63695^2 + 167586^2 .

It is a cyclic number.

It is not a de Polignac number, because 32142120421 - 2¹ = 32142120419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32142120392 and 32142120401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32142120481) 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, 107859316 + ... + 107859613.

It is an arithmetic number, because the mean of its divisors is an integer number (8089459875).

Almost surely, 2^32142120421 is an apocalyptic number.

It is an amenable number.

32142120421 is a deficient number, since it is larger than the sum of its proper divisors (215719079).

32142120421 is a wasteful number, since it uses less digits than its factorization.

32142120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215719078.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 32142120421 its reverse (12402124123), we get a palindrome (44544244544).

The spelling of 32142120421 in words is "thirty-two billion, one hundred forty-two million, one hundred twenty thousand, four hundred twenty-one".