121243630 has 16 divisors (see below), whose sum is σ = 219834000. Its totient is φ = 48142912.

The previous prime is 121243627. The next prime is 121243657. The reversal of 121243630 is 36342121.

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, 42880 + ... + 45619.

It is an arithmetic number, because the mean of its divisors is an integer number (13739625).

Almost surely, 2^121243630 is an apocalyptic number.

121243630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121243630 is a deficient number, since it is larger than the sum of its proper divisors (98590370).

121243630 is a wasteful number, since it uses less digits than its factorization.

121243630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88643.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 121243630 is about 11011.0685221735. The cubic root of 121243630 is about 494.9404819097.

Adding to 121243630 its reverse (36342121), we get a palindrome (157585751).

The spelling of 121243630 in words is "one hundred twenty-one million, two hundred forty-three thousand, six hundred thirty".