47212143 has 24 divisors (see below), whose sum is σ = 70070784. Its totient is φ = 28250640.

The previous prime is 47212133. The next prime is 47212183. The reversal of 47212143 is 34121274.

It is a happy number.

It is not a de Polignac number, because 47212143 - 2⁴ = 47212127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47212103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29346 + ... + 30912.

It is an arithmetic number, because the mean of its divisors is an integer number (2919616).

Almost surely, 2^47212143 is an apocalyptic number.

47212143 is a deficient number, since it is larger than the sum of its proper divisors (22858641).

47212143 is a wasteful number, since it uses less digits than its factorization.

47212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1664 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 47212143 is about 6871.1092990870. The cubic root of 47212143 is about 361.4247627648.

The spelling of 47212143 in words is "forty-seven million, two hundred twelve thousand, one hundred forty-three".