1022147 has 4 divisors (see below), whose sum is σ = 1168176. Its totient is φ = 876120.

The previous prime is 1022141. The next prime is 1022167. The reversal of 1022147 is 7412201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7412201 = 73 ⋅101537.

It is not a de Polignac number, because 1022147 - 2⁶ = 1022083 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73004 + ... + 73017.

It is an arithmetic number, because the mean of its divisors is an integer number (292044).

2^1022147 is an apocalyptic number.

1022147 is a deficient number, since it is larger than the sum of its proper divisors (146029).

1022147 is an equidigital number, since it uses as much as digits as its factorization.

1022147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146028.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1022147 is about 1011.0128584741. The cubic root of 1022147 is about 100.7328495293.

Adding to 1022147 its reverse (7412201), we get a palindrome (8434348).

The spelling of 1022147 in words is "one million, twenty-two thousand, one hundred forty-seven".