401320245421020 has 192 divisors, whose sum is σ = 1240101083160576. Its totient is φ = 96528013148160.

The previous prime is 401320245421009. The next prime is 401320245421027. The reversal of 401320245421020 is 20124542023104.

It is a happy number.

It is a super-2 number, since 2×401320245421020² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401320245421027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58354669 + ... + 64868388.

It is an arithmetic number, because the mean of its divisors is an integer number (6458859808128).

Almost surely, 2^{401320245421020} is an apocalyptic number.

It is an amenable number.

401320245421020 is an abundant number, since it is smaller than the sum of its proper divisors (838780837739556).

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

401320245421020 is a wasteful number, since it uses less digits than its factorization.

401320245421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123223220 (or 123223218 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 401320245421020 its reverse (20124542023104), we get a palindrome (421444787444124).

The spelling of 401320245421020 in words is "four hundred one trillion, three hundred twenty billion, two hundred forty-five million, four hundred twenty-one thousand, twenty".