1316420500 has 48 divisors (see below), whose sum is σ = 3044203344. Its totient is φ = 495590400.

The previous prime is 1316420473. The next prime is 1316420527. The reversal of 1316420500 is 50246131.

It is an interprime number because it is at equal distance from previous prime (1316420473) and next prime (1316420527).

It can be written as a sum of positive squares in 8 ways, for example, as 261210244 + 1055210256 = 16162^2 + 32484^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68937 + ... + 85936.

It is an arithmetic number, because the mean of its divisors is an integer number (63420903).

Almost surely, 2^1316420500 is an apocalyptic number.

1316420500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316420500 is an abundant number, since it is smaller than the sum of its proper divisors (1727782844).

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

1316420500 is a wasteful number, since it uses less digits than its factorization.

1316420500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154909 (or 154897 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1316420500 is about 36282.5095603929. The cubic root of 1316420500 is about 1095.9688540086.

Adding to 1316420500 its reverse (50246131), we get a palindrome (1366666631).

The spelling of 1316420500 in words is "one billion, three hundred sixteen million, four hundred twenty thousand, five hundred".