1012020029 has 2 divisors, whose sum is σ = 1012020030. Its totient is φ = 1012020028.

The previous prime is 1012020019. The next prime is 1012020043. The reversal of 1012020029 is 9200202101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 790903129 + 221116900 = 28123^2 + 14870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012020029 - 2⁸ = 1012019773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012019989 and 1012020016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012020019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506010014 + 506010015.

It is an arithmetic number, because the mean of its divisors is an integer number (506010015).

Almost surely, 2^1012020029 is an apocalyptic number.

It is an amenable number.

1012020029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012020029 is an equidigital number, since it uses as much as digits as its factorization.

1012020029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1012020029 is about 31812.2622427265. The cubic root of 1012020029 is about 1003.9907292282.

The spelling of 1012020029 in words is "one billion, twelve million, twenty thousand, twenty-nine".