49805142 has 16 divisors (see below), whose sum is σ = 99851952. Its totient is φ = 16561440.

The previous prime is 49805131. The next prime is 49805149. The reversal of 49805142 is 24150894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49805149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7333 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (6240747).

Almost surely, 2^49805142 is an apocalyptic number.

49805142 is an abundant number, since it is smaller than the sum of its proper divisors (50046810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49805142 is a wasteful number, since it uses less digits than its factorization.

49805142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20143.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 49805142 is about 7057.2758200314. The cubic root of 49805142 is about 367.9239514798.

The spelling of 49805142 in words is "forty-nine million, eight hundred five thousand, one hundred forty-two".