401533420 has 24 divisors (see below), whose sum is σ = 872298000. Its totient is φ = 155074752.

The previous prime is 401533373. The next prime is 401533423. The reversal of 401533420 is 24335104.

It is a super-2 number, since 2×401533420² = 322458174753792800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401533391 and 401533400.

It is not an unprimeable number, because it can be changed into a prime (401533423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345570 + ... + 346729.

It is an arithmetic number, because the mean of its divisors is an integer number (36345750).

Almost surely, 2^401533420 is an apocalyptic number.

It is an amenable number.

401533420 is an abundant number, since it is smaller than the sum of its proper divisors (470764580).

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

401533420 is a wasteful number, since it uses less digits than its factorization.

401533420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692337 (or 692335 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 401533420 is about 20038.2988299905. The cubic root of 401533420 is about 737.7466270826.

Adding to 401533420 its reverse (24335104), we get a palindrome (425868524).

The spelling of 401533420 in words is "four hundred one million, five hundred thirty-three thousand, four hundred twenty".