203247642 has 64 divisors (see below), whose sum is σ = 459567360. Its totient is φ = 59457024.

The previous prime is 203247637. The next prime is 203247643. The reversal of 203247642 is 246742302.

It is not an unprimeable number, because it can be changed into a prime (203247643) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 496734 + ... + 497142.

It is an arithmetic number, because the mean of its divisors is an integer number (7180740).

Almost surely, 2^203247642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203247642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229783680).

203247642 is an abundant number, since it is smaller than the sum of its proper divisors (256319718).

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

203247642 is a wasteful number, since it uses less digits than its factorization.

203247642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 203247642 is about 14256.4947304728. The cubic root of 203247642 is about 587.9519547490.

Adding to 203247642 its reverse (246742302), we get a palindrome (449989944).

It can be divided in two parts, 20324 and 7642, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 203247642 in words is "two hundred three million, two hundred forty-seven thousand, six hundred forty-two".