121242630 has 32 divisors (see below), whose sum is σ = 291610368. Its totient is φ = 32261600.

The previous prime is 121242587. The next prime is 121242631. The reversal of 121242630 is 36242121.

It is a junction number, because it is equal to n+sod(n) for n = 121242597 and 121242606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121242631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10615 + ... + 18845.

It is an arithmetic number, because the mean of its divisors is an integer number (9112824).

Almost surely, 2^121242630 is an apocalyptic number.

121242630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121242630 is an abundant number, since it is smaller than the sum of its proper divisors (170367738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121242630 is a wasteful number, since it uses less digits than its factorization.

121242630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 121242630 is about 11011.0231132261. The cubic root of 121242630 is about 494.9391211733.

Adding to 121242630 its reverse (36242121), we get a palindrome (157484751).

The spelling of 121242630 in words is "one hundred twenty-one million, two hundred forty-two thousand, six hundred thirty".