1401203142020 has 96 divisors (see below), whose sum is σ = 3356423433216. Its totient is φ = 486381526400.

The previous prime is 1401203141999. The next prime is 1401203142077. The reversal of 1401203142020 is 202413021041.

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 = 1401203141983 and 1401203142001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2202467 + ... + 2766453.

It is an arithmetic number, because the mean of its divisors is an integer number (34962744096).

Almost surely, 2^{1401203142020} is an apocalyptic number.

1401203142020 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 1401203142020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678211716608).

1401203142020 is an abundant number, since it is smaller than the sum of its proper divisors (1955220291196).

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

1401203142020 is a wasteful number, since it uses less digits than its factorization.

1401203142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564521 (or 564519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1401203142020 its reverse (202413021041), we get a palindrome (1603616163061).

The spelling of 1401203142020 in words is "one trillion, four hundred one billion, two hundred three million, one hundred forty-two thousand, twenty".