1020242061 has 18 divisors (see below), whose sum is σ = 1530295182. Its totient is φ = 680157000.

The previous prime is 1020242051. The next prime is 1020242099. The reversal of 1020242061 is 1602420201.

It can be written as a sum of positive squares in only one way, i.e., 917726436 + 102515625 = 30294^2 + 10125^2 .

It is not a de Polignac number, because 1020242061 - 2⁷ = 1020241933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020242051) 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 17 ways as a sum of consecutive naturals, for example, 71190 + ... + 84311.

It is an arithmetic number, because the mean of its divisors is an integer number (85016399).

Almost surely, 2^1020242061 is an apocalyptic number.

It is an amenable number.

1020242061 is a deficient number, since it is larger than the sum of its proper divisors (510053121).

1020242061 is an frugal number, since it uses more digits than its factorization.

1020242061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155525 (or 155504 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1020242061 is about 31941.2282324897. The cubic root of 1020242061 is about 1006.7023320527.

Adding to 1020242061 its reverse (1602420201), we get a palindrome (2622662262).

The spelling of 1020242061 in words is "one billion, twenty million, two hundred forty-two thousand, sixty-one".