121142204 has 12 divisors (see below), whose sum is σ = 224469504. Its totient is φ = 57008064.

The previous prime is 121142183. The next prime is 121142209. The reversal of 121142204 is 402241121.

It is a super-3 number, since 3×121142204³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142209) 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, 890684 + ... + 890819.

It is an arithmetic number, because the mean of its divisors is an integer number (18705792).

Almost surely, 2^121142204 is an apocalyptic number.

It is an amenable number.

121142204 is a deficient number, since it is larger than the sum of its proper divisors (103327300).

121142204 is a wasteful number, since it uses less digits than its factorization.

121142204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781524 (or 1781522 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121142204 is about 11006.4619201631. The cubic root of 121142204 is about 494.8024297415.

Adding to 121142204 its reverse (402241121), we get a palindrome (523383325).

The spelling of 121142204 in words is "one hundred twenty-one million, one hundred forty-two thousand, two hundred four".