121422545 has 4 divisors (see below), whose sum is σ = 145707060. Its totient is φ = 97138032.

The previous prime is 121422529. The next prime is 121422547. The reversal of 121422545 is 545224121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 107412496 = 3743^2 + 10364^2 .

It is a cyclic number.

It is not a de Polignac number, because 121422545 - 2⁴ = 121422529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121422547) 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, 12142250 + ... + 12142259.

It is an arithmetic number, because the mean of its divisors is an integer number (36426765).

Almost surely, 2^121422545 is an apocalyptic number.

It is an amenable number.

121422545 is a deficient number, since it is larger than the sum of its proper divisors (24284515).

121422545 is an equidigital number, since it uses as much as digits as its factorization.

121422545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24284514.

The product of its digits is 3200, while the sum is 26.

The square root of 121422545 is about 11019.1898522532. The cubic root of 121422545 is about 495.1838177291.

Adding to 121422545 its reverse (545224121), we get a palindrome (666646666).

The spelling of 121422545 in words is "one hundred twenty-one million, four hundred twenty-two thousand, five hundred forty-five".