64442129 has 8 divisors (see below), whose sum is σ = 68016000. Its totient is φ = 60886512.

The previous prime is 64442107. The next prime is 64442171. The reversal of 64442129 is 92124446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64442129 - 2²⁴ = 47664913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64442095 and 64442104.

It is not an unprimeable number, because it can be changed into a prime (64442179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3032 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (8502000).

Almost surely, 2^64442129 is an apocalyptic number.

It is an amenable number.

64442129 is a deficient number, since it is larger than the sum of its proper divisors (3573871).

64442129 is a wasteful number, since it uses less digits than its factorization.

64442129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9127.

The product of its digits is 13824, while the sum is 32.

The square root of 64442129 is about 8027.5855025032. The cubic root of 64442129 is about 400.9189891139.

The spelling of 64442129 in words is "sixty-four million, four hundred forty-two thousand, one hundred twenty-nine".