47901142 has 4 divisors (see below), whose sum is σ = 71851716. Its totient is φ = 23950570.

The previous prime is 47901137. The next prime is 47901143. The reversal of 47901142 is 24110974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24110974 = 2 ⋅12055487.

It is a self number, because there is not a number n which added to its sum of digits gives 47901142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47901143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11975284 + ... + 11975287.

It is an arithmetic number, because the mean of its divisors is an integer number (17962929).

Almost surely, 2^47901142 is an apocalyptic number.

47901142 is a deficient number, since it is larger than the sum of its proper divisors (23950574).

47901142 is a wasteful number, since it uses less digits than its factorization.

47901142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23950573.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 47901142 is about 6921.0650914437. The cubic root of 47901142 is about 363.1744513830.

The spelling of 47901142 in words is "forty-seven million, nine hundred one thousand, one hundred forty-two".