1020404115 has 32 divisors (see below), whose sum is σ = 1844812800. Its totient is φ = 534987360.

The previous prime is 1020404113. The next prime is 1020404191. The reversal of 1020404115 is 5114040201.

It is not a de Polignac number, because 1020404115 - 2¹ = 1020404113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020404113) 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, 56091 + ... + 72020.

It is an arithmetic number, because the mean of its divisors is an integer number (57650400).

Almost surely, 2^1020404115 is an apocalyptic number.

1020404115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020404115 is a deficient number, since it is larger than the sum of its proper divisors (824408685).

1020404115 is a wasteful number, since it uses less digits than its factorization.

1020404115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128184 (or 128178 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1020404115 is about 31943.7648845592. The cubic root of 1020404115 is about 1006.7556303528.

Adding to 1020404115 its reverse (5114040201), we get a palindrome (6134444316).

The spelling of 1020404115 in words is "one billion, twenty million, four hundred four thousand, one hundred fifteen".