102020415 has 32 divisors (see below), whose sum is σ = 187094016. Its totient is φ = 46502400.

The previous prime is 102020407. The next prime is 102020419. The reversal of 102020415 is 514020201.

It is not a de Polignac number, because 102020415 - 2³ = 102020407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 102020394 and 102020403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020419) 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, 40894 + ... + 43316.

It is an arithmetic number, because the mean of its divisors is an integer number (5846688).

Almost surely, 2^102020415 is an apocalyptic number.

102020415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102020415 is a deficient number, since it is larger than the sum of its proper divisors (85073601).

102020415 is a wasteful number, since it uses less digits than its factorization.

102020415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 102020415 is about 10100.5155808998. The cubic root of 102020415 is about 467.2640425179.

Adding to 102020415 its reverse (514020201), we get a palindrome (616040616).

The spelling of 102020415 in words is "one hundred two million, twenty thousand, four hundred fifteen".