32421407 has 2 divisors, whose sum is σ = 32421408. Its totient is φ = 32421406.

The previous prime is 32421383. The next prime is 32421409. The reversal of 32421407 is 70412423.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32421407 - 2⁶ = 32421343 is a prime.

It is a super-2 number, since 2×32421407² = 2102295263719298, which contains 22 as substring.

Together with 32421409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32421409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210703 + 16210704.

It is an arithmetic number, because the mean of its divisors is an integer number (16210704).

Almost surely, 2^32421407 is an apocalyptic number.

32421407 is a deficient number, since it is larger than the sum of its proper divisors (1).

32421407 is an equidigital number, since it uses as much as digits as its factorization.

32421407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 32421407 is about 5693.9798910779. The cubic root of 32421407 is about 318.8677661986.

The spelling of 32421407 in words is "thirty-two million, four hundred twenty-one thousand, four hundred seven".