1020407115 has 96 divisors (see below), whose sum is σ = 2058073920. Its totient is φ = 427908096.

The previous prime is 1020407051. The next prime is 1020407159. The reversal of 1020407115 is 5117040201.

It is a happy number.

It is not a de Polignac number, because 1020407115 - 2⁶ = 1020407051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1020407091 and 1020407100.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2570097 + ... + 2570493.

It is an arithmetic number, because the mean of its divisors is an integer number (21438270).

Almost surely, 2^1020407115 is an apocalyptic number.

1020407115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020407115 is an abundant number, since it is smaller than the sum of its proper divisors (1037666805).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020407115 is a wasteful number, since it uses less digits than its factorization.

1020407115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 1020407115 is about 31943.8118420454. The cubic root of 1020407115 is about 1006.7566169763.

Adding to 1020407115 its reverse (5117040201), we get a palindrome (6137447316).

The spelling of 1020407115 in words is "one billion, twenty million, four hundred seven thousand, one hundred fifteen".