121286461 has 4 divisors (see below), whose sum is σ = 123867072. Its totient is φ = 118705852.

The previous prime is 121286453. The next prime is 121286467. The reversal of 121286461 is 164682121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121286461 - 2³ = 121286453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121286467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290235 + ... + 1290328.

It is an arithmetic number, because the mean of its divisors is an integer number (30966768).

Almost surely, 2^121286461 is an apocalyptic number.

It is an amenable number.

121286461 is a deficient number, since it is larger than the sum of its proper divisors (2580611).

121286461 is an equidigital number, since it uses as much as digits as its factorization.

121286461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580610.

The product of its digits is 4608, while the sum is 31.

The square root of 121286461 is about 11013.0132570519. The cubic root of 121286461 is about 494.9987565863.

The spelling of 121286461 in words is "one hundred twenty-one million, two hundred eighty-six thousand, four hundred sixty-one".