1401420320 has 24 divisors (see below), whose sum is σ = 3310855884. Its totient is φ = 560568064.

The previous prime is 1401420301. The next prime is 1401420323. The reversal of 1401420320 is 230241041.

It can be written as a sum of positive squares in 2 ways, for example, as 1308413584 + 93006736 = 36172^2 + 9644^2 .

It is not an unprimeable number, because it can be changed into a prime (1401420323) 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, 4379279 + ... + 4379598.

Almost surely, 2^1401420320 is an apocalyptic number.

1401420320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401420320 is an abundant number, since it is smaller than the sum of its proper divisors (1909435564).

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

1401420320 is an equidigital number, since it uses as much as digits as its factorization.

1401420320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758892 (or 8758884 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1401420320 is about 37435.5488807096. The cubic root of 1401420320 is about 1119.0671228580.

Adding to 1401420320 its reverse (230241041), we get a palindrome (1631661361).

The spelling of 1401420320 in words is "one billion, four hundred one million, four hundred twenty thousand, three hundred twenty".