121402770 has 16 divisors (see below), whose sum is σ = 291366720. Its totient is φ = 32374064.

The previous prime is 121402751. The next prime is 121402817. The reversal of 121402770 is 77204121.

It is a self number, because there is not a number n which added to its sum of digits gives 121402770.

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, 2023350 + ... + 2023409.

It is an arithmetic number, because the mean of its divisors is an integer number (18210420).

Almost surely, 2^121402770 is an apocalyptic number.

121402770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121402770 is an abundant number, since it is smaller than the sum of its proper divisors (169963950).

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

121402770 is a wasteful number, since it uses less digits than its factorization.

121402770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046769.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 121402770 is about 11018.2925174457. The cubic root of 121402770 is about 495.1569342217.

Adding to 121402770 its reverse (77204121), we get a palindrome (198606891).

The spelling of 121402770 in words is "one hundred twenty-one million, four hundred two thousand, seven hundred seventy".