32142421 has 2 divisors, whose sum is σ = 32142422. Its totient is φ = 32142420.

The previous prime is 32142419. The next prime is 32142437. The reversal of 32142421 is 12424123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25867396 + 6275025 = 5086^2 + 2505^2 .

It is an emirp because it is prime and its reverse (12424123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32142421 - 2¹ = 32142419 is a prime.

Together with 32142419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32142491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16071210 + 16071211.

It is an arithmetic number, because the mean of its divisors is an integer number (16071211).

Almost surely, 2^32142421 is an apocalyptic number.

It is an amenable number.

32142421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32142421 is an equidigital number, since it uses as much as digits as its factorization.

32142421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 32142421 is about 5669.4286308234. The cubic root of 32142421 is about 317.9505117931.

Adding to 32142421 its reverse (12424123), we get a palindrome (44566544).

The spelling of 32142421 in words is "thirty-two million, one hundred forty-two thousand, four hundred twenty-one".