1421313320 has 64 divisors (see below), whose sum is σ = 3682800000. Its totient is φ = 483575040.

The previous prime is 1421313269. The next prime is 1421313367. The reversal of 1421313320 is 233131241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1421313292 and 1421313301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17306 + ... + 56054.

It is an arithmetic number, because the mean of its divisors is an integer number (57543750).

Almost surely, 2^1421313320 is an apocalyptic number.

1421313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421313320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841400000).

1421313320 is an abundant number, since it is smaller than the sum of its proper divisors (2261486680).

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

1421313320 is a wasteful number, since it uses less digits than its factorization.

1421313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38898 (or 38894 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1421313320 is about 37700.3092825510. The cubic root of 1421313320 is about 1124.3372741985.

Adding to 1421313320 its reverse (233131241), we get a palindrome (1654444561).

It can be divided in two parts, 1421 and 313320, that multiplied together give a triangular number (445227720 = T₂₉₈₄₀).

The spelling of 1421313320 in words is "one billion, four hundred twenty-one million, three hundred thirteen thousand, three hundred twenty".