202040424 has 96 divisors (see below), whose sum is σ = 566865000. Its totient is φ = 64958976.

The previous prime is 202040401. The next prime is 202040431. The reversal of 202040424 is 424040202.

202040424 is a `hidden beast` number, since 202 + 0 + 40 + 424 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 192932100 + 9108324 = 13890^2 + 3018^2 .

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 = 202040397 and 202040406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396682 + ... + 397190.

Almost surely, 2^202040424 is an apocalyptic number.

202040424 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 202040424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283432500).

202040424 is an abundant number, since it is smaller than the sum of its proper divisors (364824576).

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

202040424 is a wasteful number, since it uses less digits than its factorization.

202040424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 202040424 is about 14214.0924437686. The cubic root of 202040424 is about 586.7855678999.

Adding to 202040424 its reverse (424040202), we get a palindrome (626080626).

The spelling of 202040424 in words is "two hundred two million, forty thousand, four hundred twenty-four".