2142047 has 4 divisors (see below), whose sum is σ = 2150280. Its totient is φ = 2133816.

The previous prime is 2142043. The next prime is 2142053. The reversal of 2142047 is 7402412.

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

It is a cyclic number.

It is not a de Polignac number, because 2142047 - 2² = 2142043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3713 + ... + 4250.

It is an arithmetic number, because the mean of its divisors is an integer number (537570).

2^2142047 is an apocalyptic number.

2142047 is a deficient number, since it is larger than the sum of its proper divisors (8233).

2142047 is an equidigital number, since it uses as much as digits as its factorization.

2142047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8232.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2142047 is about 1463.5733667979. The cubic root of 2142047 is about 128.9069497030.

Adding to 2142047 its reverse (7402412), we get a palindrome (9544459).

The spelling of 2142047 in words is "two million, one hundred forty-two thousand, forty-seven".