121653245 has 8 divisors (see below), whose sum is σ = 166838784. Its totient is φ = 83419344.

The previous prime is 121653239. The next prime is 121653313. The reversal of 121653245 is 542356121.

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 121653245 - 2⁸ = 121652989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1737869 + ... + 1737938.

It is an arithmetic number, because the mean of its divisors is an integer number (20854848).

Almost surely, 2^121653245 is an apocalyptic number.

It is an amenable number.

121653245 is a deficient number, since it is larger than the sum of its proper divisors (45185539).

121653245 is an equidigital number, since it uses as much as digits as its factorization.

121653245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475819.

The product of its digits is 7200, while the sum is 29.

The square root of 121653245 is about 11029.6529863818. The cubic root of 121653245 is about 495.4972318829.

The spelling of 121653245 in words is "one hundred twenty-one million, six hundred fifty-three thousand, two hundred forty-five".