121142577 has 16 divisors (see below), whose sum is σ = 168594048. Its totient is φ = 77301120.

The previous prime is 121142573. The next prime is 121142591. The reversal of 121142577 is 775241121.

It is not a de Polignac number, because 121142577 - 2² = 121142573 is a prime.

It is a super-3 number, since 3×121142577³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121142573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2773 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (10537128).

Almost surely, 2^121142577 is an apocalyptic number.

It is an amenable number.

121142577 is a deficient number, since it is larger than the sum of its proper divisors (47451471).

121142577 is a wasteful number, since it uses less digits than its factorization.

121142577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18680.

The product of its digits is 3920, while the sum is 30.

The square root of 121142577 is about 11006.4788647414. The cubic root of 121142577 is about 494.8029375775.

Adding to 121142577 its reverse (775241121), we get a palindrome (896383698).

The spelling of 121142577 in words is "one hundred twenty-one million, one hundred forty-two thousand, five hundred seventy-seven".