1205020015 has 16 divisors (see below), whose sum is σ = 1458616320. Its totient is φ = 955648800.

The previous prime is 1205020013. The next prime is 1205020021. The reversal of 1205020015 is 5100205021.

It is not a de Polignac number, because 1205020015 - 2¹ = 1205020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205020013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441826 + ... + 444544.

It is an arithmetic number, because the mean of its divisors is an integer number (91163520).

Almost surely, 2^1205020015 is an apocalyptic number.

1205020015 is a deficient number, since it is larger than the sum of its proper divisors (253596305).

1205020015 is a wasteful number, since it uses less digits than its factorization.

1205020015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1205020015 is about 34713.3982058801. The cubic root of 1205020015 is about 1064.1383304118.

Adding to 1205020015 its reverse (5100205021), we get a palindrome (6305225036).

The spelling of 1205020015 in words is "one billion, two hundred five million, twenty thousand, fifteen".