201140424 has 96 divisors (see below), whose sum is σ = 567698040. Its totient is φ = 64281600.

The previous prime is 201140417. The next prime is 201140449. The reversal of 201140424 is 424041102.

201140424 is a `hidden beast` number, since 201 + 1 + 40 + 424 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18404100 + 182736324 = 4290^2 + 13518^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201140397 and 201140406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179514 + ... + 180630.

Almost surely, 2^201140424 is an apocalyptic number.

201140424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201140424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283849020).

201140424 is an abundant number, since it is smaller than the sum of its proper divisors (366557616).

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

201140424 is a wasteful number, since it uses less digits than its factorization.

201140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 201140424 is about 14182.3983867328. The cubic root of 201140424 is about 585.9129816002.

Adding to 201140424 its reverse (424041102), we get a palindrome (625181526).

It can be divided in two parts, 201 and 140424, that added together give a square (140625 = 375²).

The spelling of 201140424 in words is "two hundred one million, one hundred forty thousand, four hundred twenty-four".