201040120 has 16 divisors (see below), whose sum is σ = 452340360. Its totient is φ = 80416032.

The previous prime is 201040117. The next prime is 201040123. The reversal of 201040120 is 21040102.

It is an interprime number because it is at equal distance from previous prime (201040117) and next prime (201040123).

It is a super-2 number, since 2×201040120² = 80834259699228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201040097 and 201040106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201040123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512962 + ... + 2513041.

Almost surely, 2^201040120 is an apocalyptic number.

201040120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201040120 is an abundant number, since it is smaller than the sum of its proper divisors (251300240).

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

201040120 is a wasteful number, since it uses less digits than its factorization.

201040120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026014 (or 5026010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 201040120 is about 14178.8617314649. The cubic root of 201040120 is about 585.8155717306.

Adding to 201040120 its reverse (21040102), we get a palindrome (222080222).

The spelling of 201040120 in words is "two hundred one million, forty thousand, one hundred twenty".