1020115252 has 24 divisors (see below), whose sum is σ = 1988821800. Its totient is φ = 454586496.

The previous prime is 1020115249. The next prime is 1020115253. The reversal of 1020115252 is 2525110201.

It can be written as a sum of positive squares in 4 ways, for example, as 6584356 + 1013530896 = 2566^2 + 31836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020115253) 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 7 ways as a sum of consecutive naturals, for example, 336727 + ... + 339742.

It is an arithmetic number, because the mean of its divisors is an integer number (82867575).

Almost surely, 2^1020115252 is an apocalyptic number.

It is an amenable number.

1020115252 is a deficient number, since it is larger than the sum of its proper divisors (968706548).

1020115252 is a wasteful number, since it uses less digits than its factorization.

1020115252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676515 (or 676513 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1020115252 is about 31939.2431344263. The cubic root of 1020115252 is about 1006.6606216226.

Adding to 1020115252 its reverse (2525110201), we get a palindrome (3545225453).

The spelling of 1020115252 in words is "one billion, twenty million, one hundred fifteen thousand, two hundred fifty-two".