642826301041 has 4 divisors (see below), whose sum is σ = 642828205300. Its totient is φ = 642824396784.

The previous prime is 642826300981. The next prime is 642826301101. The reversal of 642826301041 is 140103628246.

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 (642826300981) and next prime (642826301101).

It can be written as a sum of positive squares in 2 ways, for example, as 333934892641 + 308891408400 = 577871^2 + 555780^2 .

It is a cyclic number.

It is not a de Polignac number, because 642826301041 - 2⁷ = 642826300913 is a prime.

It is a super-3 number, since 3×642826301041³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642826301141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294246 + ... + 1171423.

It is an arithmetic number, because the mean of its divisors is an integer number (160707051325).

Almost surely, 2^642826301041 is an apocalyptic number.

It is an amenable number.

642826301041 is a deficient number, since it is larger than the sum of its proper divisors (1904259).

642826301041 is a wasteful number, since it uses less digits than its factorization.

642826301041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904258.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 642826301041 its reverse (140103628246), we get a palindrome (782929929287).

The spelling of 642826301041 in words is "six hundred forty-two billion, eight hundred twenty-six million, three hundred one thousand, forty-one".