121630245 has 32 divisors (see below), whose sum is σ = 213577344. Its totient is φ = 58617600.

The previous prime is 121630237. The next prime is 121630247. The reversal of 121630245 is 542036121.

It is not a de Polignac number, because 121630245 - 2³ = 121630237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121630247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26415 + ... + 30675.

It is an arithmetic number, because the mean of its divisors is an integer number (6674292).

Almost surely, 2^121630245 is an apocalyptic number.

121630245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121630245 is a deficient number, since it is larger than the sum of its proper divisors (91947099).

121630245 is a wasteful number, since it uses less digits than its factorization.

121630245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 121630245 is about 11028.6102932328. The cubic root of 121630245 is about 495.4660033568.

Adding to 121630245 its reverse (542036121), we get a palindrome (663666366).

The spelling of 121630245 in words is "one hundred twenty-one million, six hundred thirty thousand, two hundred forty-five".