53128442 has 8 divisors (see below), whose sum is σ = 80044416. Its totient is φ = 26446972.

The previous prime is 53128409. The next prime is 53128447. The reversal of 53128442 is 24482135.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (53128447) 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, 58058 + ... + 58965.

It is an arithmetic number, because the mean of its divisors is an integer number (10005552).

Almost surely, 2^53128442 is an apocalyptic number.

53128442 is a deficient number, since it is larger than the sum of its proper divisors (26915974).

53128442 is a wasteful number, since it uses less digits than its factorization.

53128442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117252.

The product of its digits is 7680, while the sum is 29.

The square root of 53128442 is about 7288.9259839842. The cubic root of 53128442 is about 375.9317676474.

The spelling of 53128442 in words is "fifty-three million, one hundred twenty-eight thousand, four hundred forty-two".