1021042002 has 16 divisors (see below), whose sum is σ = 2042894592. Its totient is φ = 340212240.

The previous prime is 1021041991. The next prime is 1021042003. The reversal of 1021042002 is 2002401201.

It is not an unprimeable number, because it can be changed into a prime (1021042003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16738 + ... + 48189.

It is an arithmetic number, because the mean of its divisors is an integer number (127680912).

Almost surely, 2^1021042002 is an apocalyptic number.

1021042002 is an abundant number, since it is smaller than the sum of its proper divisors (1021852590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021042002 is a wasteful number, since it uses less digits than its factorization.

1021042002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67553.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1021042002 is about 31953.7478552986. The cubic root of 1021042002 is about 1006.9653716199.

Adding to 1021042002 its reverse (2002401201), we get a palindrome (3023443203).

The spelling of 1021042002 in words is "one billion, twenty-one million, forty-two thousand, two".