201405020 has 24 divisors (see below), whose sum is σ = 441340704. Its totient is φ = 77059136.

The previous prime is 201405013. The next prime is 201405031. The reversal of 201405020 is 20504102.

It is a junction number, because it is equal to n+sod(n) for n = 201404986 and 201405004.

It is a congruent number.

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, 218459 + ... + 219378.

It is an arithmetic number, because the mean of its divisors is an integer number (18389196).

Almost surely, 2^201405020 is an apocalyptic number.

201405020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201405020 is an abundant number, since it is smaller than the sum of its proper divisors (239935684).

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

201405020 is a wasteful number, since it uses less digits than its factorization.

201405020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437869 (or 437867 counting only the distinct ones).

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

The square root of 201405020 is about 14191.7236444345. The cubic root of 201405020 is about 586.1697877627.

Adding to 201405020 its reverse (20504102), we get a palindrome (221909122).

The spelling of 201405020 in words is "two hundred one million, four hundred five thousand, twenty".