121142003 has 4 divisors (see below), whose sum is σ = 124096728. Its totient is φ = 118187280.

The previous prime is 121141987. The next prime is 121142011. The reversal of 121142003 is 300241121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121142003 - 2⁴ = 121141987 is a prime.

It is a super-3 number, since 3×121142003³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121142503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477301 + ... + 1477382.

It is an arithmetic number, because the mean of its divisors is an integer number (31024182).

Almost surely, 2^121142003 is an apocalyptic number.

121142003 is a deficient number, since it is larger than the sum of its proper divisors (2954725).

121142003 is an equidigital number, since it uses as much as digits as its factorization.

121142003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954724.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121142003 is about 11006.4527891596. The cubic root of 121142003 is about 494.8021560814.

Adding to 121142003 its reverse (300241121), we get a palindrome (421383124).

The spelling of 121142003 in words is "one hundred twenty-one million, one hundred forty-two thousand, three".