1020002061 has 32 divisors (see below), whose sum is σ = 1544417280. Its totient is φ = 593611200.

The previous prime is 1020002047. The next prime is 1020002077. The reversal of 1020002061 is 1602000201.

It is not a de Polignac number, because 1020002061 - 2⁷ = 1020001933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674296 + ... + 675806.

It is an arithmetic number, because the mean of its divisors is an integer number (48263040).

Almost surely, 2^1020002061 is an apocalyptic number.

It is an amenable number.

1020002061 is a deficient number, since it is larger than the sum of its proper divisors (524415219).

1020002061 is a wasteful number, since it uses less digits than its factorization.

1020002061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1020002061 is about 31937.4711115329. The cubic root of 1020002061 is about 1006.6233875497.

Adding to 1020002061 its reverse (1602000201), we get a palindrome (2622002262).

The spelling of 1020002061 in words is "one billion, twenty million, two thousand, sixty-one".