101256001242 has 16 divisors (see below), whose sum is σ = 220922184672. Its totient is φ = 30683636720.

The previous prime is 101256001211. The next prime is 101256001243. The reversal of 101256001242 is 242100652101.

It is not an unprimeable number, because it can be changed into a prime (101256001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767090853 + ... + 767090984.

It is an arithmetic number, because the mean of its divisors is an integer number (13807636542).

Almost surely, 2^101256001242 is an apocalyptic number.

101256001242 is an abundant number, since it is smaller than the sum of its proper divisors (119666183430).

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

101256001242 is a wasteful number, since it uses less digits than its factorization.

101256001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534181853.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 101256001242 its reverse (242100652101), we get a palindrome (343356653343).

The spelling of 101256001242 in words is "one hundred one billion, two hundred fifty-six million, one thousand, two hundred forty-two".