1264315120 has 20 divisors (see below), whose sum is σ = 2939532840. Its totient is φ = 505726016.

The previous prime is 1264315093. The next prime is 1264315121. The reversal of 1264315120 is 215134621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1264315120² = 3196985445321228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264315121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7901890 + ... + 7902049.

It is an arithmetic number, because the mean of its divisors is an integer number (146976642).

Almost surely, 2^1264315120 is an apocalyptic number.

1264315120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264315120 is an abundant number, since it is smaller than the sum of its proper divisors (1675217720).

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

1264315120 is a wasteful number, since it uses less digits than its factorization.

1264315120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15803952 (or 15803946 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1264315120 is about 35557.2091143273. The cubic root of 1264315120 is about 1081.3138787703.

Adding to 1264315120 its reverse (215134621), we get a palindrome (1479449741).

The spelling of 1264315120 in words is "one billion, two hundred sixty-four million, three hundred fifteen thousand, one hundred twenty".