121286241 has 40 divisors (see below), whose sum is σ = 189050400. Its totient is φ = 77423040.

The previous prime is 121286227. The next prime is 121286299. The reversal of 121286241 is 142682121.

121286241 is a `hidden beast` number, since 12 + 1 + 28 + 624 + 1 = 666.

It is not a de Polignac number, because 121286241 - 2¹⁷ = 121155169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121286201) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 195630 + ... + 196248.

It is an arithmetic number, because the mean of its divisors is an integer number (4726260).

Almost surely, 2^121286241 is an apocalyptic number.

It is an amenable number.

121286241 is a deficient number, since it is larger than the sum of its proper divisors (67764159).

121286241 is an equidigital number, since it uses as much as digits as its factorization.

121286241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 722 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 121286241 is about 11013.0032688636. The cubic root of 121286241 is about 494.9984572955.

It can be divided in two parts, 1212862 and 41, that added together give a triangular number (1212903 = T₁₅₅₇).

The spelling of 121286241 in words is "one hundred twenty-one million, two hundred eighty-six thousand, two hundred forty-one".