401200520 has 32 divisors (see below), whose sum is σ = 1031659200. Its totient is φ = 137554368.

The previous prime is 401200483. The next prime is 401200537. The reversal of 401200520 is 25002104.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 401200495 and 401200504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716150 + ... + 716709.

It is an arithmetic number, because the mean of its divisors is an integer number (32239350).

Almost surely, 2^401200520 is an apocalyptic number.

401200520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401200520 is an abundant number, since it is smaller than the sum of its proper divisors (630458680).

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

401200520 is a wasteful number, since it uses less digits than its factorization.

401200520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432877 (or 1432873 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 401200520 is about 20029.9905142264. The cubic root of 401200520 is about 737.5426890927.

Adding to 401200520 its reverse (25002104), we get a palindrome (426202624).

The spelling of 401200520 in words is "four hundred one million, two hundred thousand, five hundred twenty".