642144301 has 4 divisors (see below), whose sum is σ = 642757500. Its totient is φ = 641531104.

The previous prime is 642144289. The next prime is 642144313. The reversal of 642144301 is 103441246.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (642144289) and next prime (642144313).

It can be written as a sum of positive squares in 2 ways, for example, as 619960201 + 22184100 = 24899^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 642144301 - 2¹³ = 642136109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642144001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305026 + ... + 307123.

It is an arithmetic number, because the mean of its divisors is an integer number (160689375).

Almost surely, 2^642144301 is an apocalyptic number.

It is an amenable number.

642144301 is a deficient number, since it is larger than the sum of its proper divisors (613199).

642144301 is a wasteful number, since it uses less digits than its factorization.

642144301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613198.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 642144301 is about 25340.5663117461. The cubic root of 642144301 is about 862.7352523857.

Adding to 642144301 its reverse (103441246), we get a palindrome (745585547).

The spelling of 642144301 in words is "six hundred forty-two million, one hundred forty-four thousand, three hundred one".