100421264242 has 16 divisors (see below), whose sum is σ = 162226635480. Its totient is φ = 46346084352.

The previous prime is 100421264239. The next prime is 100421264249. The reversal of 100421264242 is 242462124001.

It can be written as a sum of positive squares in 4 ways, for example, as 33376001481 + 67045262761 = 182691^2 + 258931^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100421264242.

It is not an unprimeable number, because it can be changed into a prime (100421264249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555634 + ... + 713842.

Almost surely, 2^100421264242 is an apocalyptic number.

100421264242 is a deficient number, since it is larger than the sum of its proper divisors (61805371238).

100421264242 is a wasteful number, since it uses less digits than its factorization.

100421264242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182637.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 100421264242 its reverse (242462124001), we get a palindrome (342883388243).

The spelling of 100421264242 in words is "one hundred billion, four hundred twenty-one million, two hundred sixty-four thousand, two hundred forty-two".