47243142 has 16 divisors (see below), whose sum is σ = 104984880. Its totient is φ = 15747696.

The previous prime is 47243137. The next prime is 47243143. The reversal of 47243142 is 24134274.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47243143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437383 + ... + 437490.

It is an arithmetic number, because the mean of its divisors is an integer number (6561555).

Almost surely, 2^47243142 is an apocalyptic number.

47243142 is an abundant number, since it is smaller than the sum of its proper divisors (57741738).

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

47243142 is a wasteful number, since it uses less digits than its factorization.

47243142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874884 (or 874878 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 47243142 is about 6873.3646782344. The cubic root of 47243142 is about 361.5038480333.

The spelling of 47243142 in words is "forty-seven million, two hundred forty-three thousand, one hundred forty-two".