1020001208 has 8 divisors (see below), whose sum is σ = 1912502280. Its totient is φ = 510000600.

The previous prime is 1020001201. The next prime is 1020001223. The reversal of 1020001208 is 8021000201.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1020001192 and 1020001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020001201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63750068 + ... + 63750083.

It is an arithmetic number, because the mean of its divisors is an integer number (239062785).

Almost surely, 2^1020001208 is an apocalyptic number.

It is an amenable number.

1020001208 is a deficient number, since it is larger than the sum of its proper divisors (892501072).

1020001208 is a wasteful number, since it uses less digits than its factorization.

1020001208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127500157 (or 127500153 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1020001208 is about 31937.4577573106. The cubic root of 1020001208 is about 1006.6231069457.

Adding to 1020001208 its reverse (8021000201), we get a palindrome (9041001409).

The spelling of 1020001208 in words is "one billion, twenty million, one thousand, two hundred eight".