121123545 has 8 divisors (see below), whose sum is σ = 193797696. Its totient is φ = 64599216.

The previous prime is 121123493. The next prime is 121123547. The reversal of 121123545 is 545321121.

It is a happy number.

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

It is not a de Polignac number, because 121123545 - 2⁹ = 121123033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121123547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037437 + ... + 4037466.

It is an arithmetic number, because the mean of its divisors is an integer number (24224712).

Almost surely, 2^121123545 is an apocalyptic number.

121123545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121123545 is a deficient number, since it is larger than the sum of its proper divisors (72674151).

121123545 is an equidigital number, since it uses as much as digits as its factorization.

121123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8074911.

The product of its digits is 1200, while the sum is 24.

The square root of 121123545 is about 11005.6142491003. The cubic root of 121123545 is about 494.7770243576. Note that the first 3 decimals are identical.

Adding to 121123545 its reverse (545321121), we get a palindrome (666444666).

The spelling of 121123545 in words is "one hundred twenty-one million, one hundred twenty-three thousand, five hundred forty-five".