49442128 has 30 divisors (see below), whose sum is σ = 97320842. Its totient is φ = 24333120.

The previous prime is 49442119. The next prime is 49442143. The reversal of 49442128 is 82124494.

49442128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 26132544 + 23309584 = 5112^2 + 4828^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 49442093 and 49442102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80350 + ... + 80962.

Almost surely, 2^49442128 is an apocalyptic number.

49442128 is the 3759-th centered heptagonal number.

It is an amenable number.

49442128 is a deficient number, since it is larger than the sum of its proper divisors (47878714).

49442128 is an equidigital number, since it uses as much as digits as its factorization.

49442128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 686 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 49442128 is about 7031.5096529835. The cubic root of 49442128 is about 367.0278769223.

The spelling of 49442128 in words is "forty-nine million, four hundred forty-two thousand, one hundred twenty-eight".