121142288 has 20 divisors (see below), whose sum is σ = 244918848. Its totient is φ = 57937440.

The previous prime is 121142269. The next prime is 121142291. The reversal of 121142288 is 882241121.

It is a super-3 number, since 3×121142288³ (a number of 25 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121142288.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164228 + ... + 164963.

Almost surely, 2^121142288 is an apocalyptic number.

It is an amenable number.

121142288 is an abundant number, since it is smaller than the sum of its proper divisors (123776560).

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

121142288 is a wasteful number, since it uses less digits than its factorization.

121142288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329222 (or 329216 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 121142288 is about 11006.4657361026. The cubic root of 121142288 is about 494.8025441068.

The spelling of 121142288 in words is "one hundred twenty-one million, one hundred forty-two thousand, two hundred eighty-eight".