4147942 has 4 divisors (see below), whose sum is σ = 6221916. Its totient is φ = 2073970.

The previous prime is 4147921. The next prime is 4147943. The reversal of 4147942 is 2497414.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4147943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036984 + ... + 1036987.

It is an arithmetic number, because the mean of its divisors is an integer number (1555479).

Almost surely, 2^4147942 is an apocalyptic number.

4147942 is a deficient number, since it is larger than the sum of its proper divisors (2073974).

4147942 is a wasteful number, since it uses less digits than its factorization.

4147942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073973.

The product of its digits is 8064, while the sum is 31.

The square root of 4147942 is about 2036.6496998748. The cubic root of 4147942 is about 160.6734892240.

The spelling of 4147942 in words is "four million, one hundred forty-seven thousand, nine hundred forty-two".