642203546 has 8 divisors (see below), whose sum is σ = 964186740. Its totient is φ = 320807968.

The previous prime is 642203531. The next prime is 642203593. The reversal of 642203546 is 645302246.

It can be written as a sum of positive squares in 2 ways, for example, as 530795521 + 111408025 = 23039^2 + 10555^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 144161 + ... + 148548.

Almost surely, 2^642203546 is an apocalyptic number.

642203546 is a deficient number, since it is larger than the sum of its proper divisors (321983194).

642203546 is a wasteful number, since it uses less digits than its factorization.

642203546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293808.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 642203546 is about 25341.7352602382. The cubic root of 642203546 is about 862.7617838980.

The spelling of 642203546 in words is "six hundred forty-two million, two hundred three thousand, five hundred forty-six".