1451421320 has 64 divisors (see below), whose sum is σ = 3369945600. Its totient is φ = 562245120.

The previous prime is 1451421317. The next prime is 1451421329. The reversal of 1451421320 is 231241541.

It is not an unprimeable number, because it can be changed into a prime (1451421329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224777 + ... + 231143.

It is an arithmetic number, because the mean of its divisors is an integer number (52655400).

Almost surely, 2^1451421320 is an apocalyptic number.

1451421320 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 1451421320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684972800).

1451421320 is an abundant number, since it is smaller than the sum of its proper divisors (1918524280).

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

1451421320 is a wasteful number, since it uses less digits than its factorization.

1451421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6558 (or 6554 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1451421320 is about 38097.5238040479. The cubic root of 1451421320 is about 1132.2208965132.

Adding to 1451421320 its reverse (231241541), we get a palindrome (1682662861).

The spelling of 1451421320 in words is "one billion, four hundred fifty-one million, four hundred twenty-one thousand, three hundred twenty".