1401322020 has 48 divisors (see below), whose sum is σ = 4484231808. Its totient is φ = 320302080.

The previous prime is 1401322009. The next prime is 1401322031. The reversal of 1401322020 is 202231041.

It is an interprime number because it is at equal distance from previous prime (1401322009) and next prime (1401322031).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1667821 + ... + 1668660.

It is an arithmetic number, because the mean of its divisors is an integer number (93421496).

Almost surely, 2^1401322020 is an apocalyptic number.

1401322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401322020 is an abundant number, since it is smaller than the sum of its proper divisors (3082909788).

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

1401322020 is a wasteful number, since it uses less digits than its factorization.

1401322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336500 (or 3336498 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1401322020 is about 37434.2359345025. The cubic root of 1401322020 is about 1119.0409572913.

Adding to 1401322020 its reverse (202231041), we get a palindrome (1603553061).

The spelling of 1401322020 in words is "one billion, four hundred one million, three hundred twenty-two thousand, twenty".