32135023421 has 4 divisors (see below), whose sum is σ = 32136682812. Its totient is φ = 32133364032.

The previous prime is 32135023411. The next prime is 32135023469. The reversal of 32135023421 is 12432053123.

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 11006947396 + 21128076025 = 104914^2 + 145355^2 .

It is a cyclic number.

It is not a de Polignac number, because 32135023421 - 2⁶ = 32135023357 is a prime.

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 (32135023411) 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, 800300 + ... + 839493.

It is an arithmetic number, because the mean of its divisors is an integer number (8034170703).

Almost surely, 2^32135023421 is an apocalyptic number.

It is an amenable number.

32135023421 is a deficient number, since it is larger than the sum of its proper divisors (1659391).

32135023421 is a wasteful number, since it uses less digits than its factorization.

32135023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659390.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 32135023421 its reverse (12432053123), we get a palindrome (44567076544).

The spelling of 32135023421 in words is "thirty-two billion, one hundred thirty-five million, twenty-three thousand, four hundred twenty-one".