1205023415 has 32 divisors (see below), whose sum is σ = 1565403840. Its totient is φ = 889966080.

The previous prime is 1205023409. The next prime is 1205023441. The reversal of 1205023415 is 5143205021.

It is a de Polignac number, because none of the positive numbers 2^k-1205023415 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1405667 + ... + 1406523.

It is an arithmetic number, because the mean of its divisors is an integer number (48918870).

Almost surely, 2^1205023415 is an apocalyptic number.

1205023415 is a deficient number, since it is larger than the sum of its proper divisors (360380425).

1205023415 is an frugal number, since it uses more digits than its factorization.

1205023415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1205023415 is about 34713.4471782910. The cubic root of 1205023415 is about 1064.1393312435.

Adding to 1205023415 its reverse (5143205021), we get a palindrome (6348228436).

The spelling of 1205023415 in words is "one billion, two hundred five million, twenty-three thousand, four hundred fifteen".