1401544120 has 64 divisors (see below), whose sum is σ = 3334356000. Its totient is φ = 528726528.

The previous prime is 1401544097. The next prime is 1401544129. The reversal of 1401544120 is 214451041.

1401544120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1401544091 and 1401544100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401544129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170014 + ... + 178066.

Almost surely, 2^1401544120 is an apocalyptic number.

1401544120 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 1401544120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1667178000).

1401544120 is an abundant number, since it is smaller than the sum of its proper divisors (1932811880).

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

1401544120 is a wasteful number, since it uses less digits than its factorization.

1401544120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312 (or 8308 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1401544120 is about 37437.2023527400. The cubic root of 1401544120 is about 1119.1000742927.

Adding to 1401544120 its reverse (214451041), we get a palindrome (1615995161).

The spelling of 1401544120 in words is "one billion, four hundred one million, five hundred forty-four thousand, one hundred twenty".