121420308 has 48 divisors (see below), whose sum is σ = 288199296. Its totient is φ = 39782400.

The previous prime is 121420291. The next prime is 121420331. The reversal of 121420308 is 803024121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204460 + ... + 205052.

It is an arithmetic number, because the mean of its divisors is an integer number (6004152).

Almost surely, 2^121420308 is an apocalyptic number.

It is an amenable number.

121420308 is an abundant number, since it is smaller than the sum of its proper divisors (166778988).

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

121420308 is a wasteful number, since it uses less digits than its factorization.

121420308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121420308 is about 11019.0883470458. The cubic root of 121420308 is about 495.1807767424.

Adding to 121420308 its reverse (803024121), we get a palindrome (924444429).

The spelling of 121420308 in words is "one hundred twenty-one million, four hundred twenty thousand, three hundred eight".