1000100001042 has 48 divisors (see below), whose sum is σ = 2295569427840. Its totient is φ = 313589702016.

The previous prime is 1000100001041. The next prime is 1000100001133. The reversal of 1000100001042 is 2401000010001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000100001041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294718 + ... + 1444665.

It is an arithmetic number, because the mean of its divisors is an integer number (47824363080).

Almost surely, 2^{1000100001042} is an apocalyptic number.

1000100001042 is an abundant number, since it is smaller than the sum of its proper divisors (1295469426798).

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

1000100001042 is a wasteful number, since it uses less digits than its factorization.

1000100001042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741287 (or 1741284 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000100001042 its reverse (2401000010001), we get a palindrome (3401100011043).

The spelling of 1000100001042 in words is "one trillion, one hundred million, one thousand, forty-two".