121420541 has 8 divisors (see below), whose sum is σ = 132763104. Its totient is φ = 110128720.

The previous prime is 121420501. The next prime is 121420553. The reversal of 121420541 is 145024121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121420541 - 2¹⁸ = 121158397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7586 + ... + 17331.

It is an arithmetic number, because the mean of its divisors is an integer number (16595388).

Almost surely, 2^121420541 is an apocalyptic number.

121420541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121420541 is a deficient number, since it is larger than the sum of its proper divisors (11342563).

121420541 is a wasteful number, since it uses less digits than its factorization.

121420541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25371.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 121420541 is about 11019.0989196032. The cubic root of 121420541 is about 495.1810934853.

Adding to 121420541 its reverse (145024121), we get a palindrome (266444662).

The spelling of 121420541 in words is "one hundred twenty-one million, four hundred twenty thousand, five hundred forty-one".