1021146147 has 12 divisors (see below), whose sum is σ = 1685701680. Its totient is φ = 583512048.

The previous prime is 1021146131. The next prime is 1021146149. The reversal of 1021146147 is 7416411201.

1021146147 is a `hidden beast` number, since 10 + 21 + 14 + 614 + 7 = 666.

It is not a de Polignac number, because 1021146147 - 2⁴ = 1021146131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021146147.

It is not an unprimeable number, because it can be changed into a prime (1021146149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8104272 + ... + 8104397.

It is an arithmetic number, because the mean of its divisors is an integer number (140475140).

Almost surely, 2^1021146147 is an apocalyptic number.

1021146147 is a deficient number, since it is larger than the sum of its proper divisors (664555533).

1021146147 is a wasteful number, since it uses less digits than its factorization.

1021146147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16208682 (or 16208679 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1021146147 is about 31955.3774347918. The cubic root of 1021146147 is about 1006.9996068565. Note that the first 3 decimals are identical.

Adding to 1021146147 its reverse (7416411201), we get a palindrome (8437557348).

The spelling of 1021146147 in words is "one billion, twenty-one million, one hundred forty-six thousand, one hundred forty-seven".