1320415245 has 24 divisors (see below), whose sum is σ = 2423351736. Its totient is φ = 662796288.

The previous prime is 1320415223. The next prime is 1320415253. The reversal of 1320415245 is 5425140231.

1320415245 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 415 + 245 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 592386921 + 728028324 = 24339^2 + 26982^2 .

It is not a de Polignac number, because 1320415245 - 2⁶ = 1320415181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862252 + ... + 863781.

It is an arithmetic number, because the mean of its divisors is an integer number (100972989).

Almost surely, 2^1320415245 is an apocalyptic number.

1320415245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320415245 is a deficient number, since it is larger than the sum of its proper divisors (1102936491).

1320415245 is a wasteful number, since it uses less digits than its factorization.

1320415245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726061 (or 1726058 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1320415245 is about 36337.5184210480. The cubic root of 1320415245 is about 1097.0763256237.

Adding to 1320415245 its reverse (5425140231), we get a palindrome (6745555476).

The spelling of 1320415245 in words is "one billion, three hundred twenty million, four hundred fifteen thousand, two hundred forty-five".