47002142 has 16 divisors (see below), whose sum is σ = 77998464. Its totient is φ = 21063000.

The previous prime is 47002141. The next prime is 47002157. The reversal of 47002142 is 24120074.

47002142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47002141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13484 + ... + 16607.

It is an arithmetic number, because the mean of its divisors is an integer number (4874904).

Almost surely, 2^47002142 is an apocalyptic number.

47002142 is a deficient number, since it is larger than the sum of its proper divisors (30996322).

47002142 is a wasteful number, since it uses less digits than its factorization.

47002142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30175.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 47002142 is about 6855.8108200271. The cubic root of 47002142 is about 360.8880902749. Note that the first 3 decimals are identical.

The spelling of 47002142 in words is "forty-seven million, two thousand, one hundred forty-two".