121123042000 has 80 divisors (see below), whose sum is σ = 299107141632. Its totient is φ = 47418345600.

The previous prime is 121123041971. The next prime is 121123042039. The reversal of 121123042000 is 240321121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550272 + ... + 738271.

Almost surely, 2^121123042000 is an apocalyptic number.

121123042000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121123042000 is an abundant number, since it is smaller than the sum of its proper divisors (177984099632).

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

121123042000 is a wasteful number, since it uses less digits than its factorization.

121123042000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288613 (or 1288597 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121123042000 its reverse (240321121), we get a palindrome (121363363121).

The spelling of 121123042000 in words is "one hundred twenty-one billion, one hundred twenty-three million, forty-two thousand".