47142072 has 48 divisors (see below), whose sum is σ = 131801280. Its totient is φ = 15206400.

The previous prime is 47142031. The next prime is 47142077. The reversal of 47142072 is 27024174.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47142077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8329 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (2745860).

Almost surely, 2^47142072 is an apocalyptic number.

It is an amenable number.

47142072 is an abundant number, since it is smaller than the sum of its proper divisors (84659208).

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

47142072 is a wasteful number, since it uses less digits than its factorization.

47142072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21164 (or 21157 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 47142072 is about 6866.0084474169. The cubic root of 47142072 is about 361.2458685766.

It can be divided in two parts, 4714 and 2072, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 47142072 in words is "forty-seven million, one hundred forty-two thousand, seventy-two".