121001042 has 8 divisors (see below), whose sum is σ = 182177100. Its totient is φ = 60275344.

The previous prime is 121001033. The next prime is 121001047. The reversal of 121001042 is 240100121.

It can be written as a sum of positive squares in 2 ways, for example, as 100380361 + 20620681 = 10019^2 + 4541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121001047) 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, 111917 + ... + 112992.

Almost surely, 2^121001042 is an apocalyptic number.

121001042 is a deficient number, since it is larger than the sum of its proper divisors (61176058).

121001042 is a wasteful number, since it uses less digits than its factorization.

121001042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225180.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121001042 is about 11000.0473635344. The cubic root of 121001042 is about 494.6101641068.

Adding to 121001042 its reverse (240100121), we get a palindrome (361101163).

The spelling of 121001042 in words is "one hundred twenty-one million, one thousand, forty-two".