121727430 has 48 divisors (see below), whose sum is σ = 345266064. Its totient is φ = 29509440.

The previous prime is 121727399. The next prime is 121727467. The reversal of 121727430 is 34727121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121727394 and 121727403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60489 + ... + 62468.

It is an arithmetic number, because the mean of its divisors is an integer number (7193043).

Almost surely, 2^121727430 is an apocalyptic number.

121727430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121727430 is an abundant number, since it is smaller than the sum of its proper divisors (223538634).

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

121727430 is a wasteful number, since it uses less digits than its factorization.

121727430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122981 (or 122978 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 121727430 is about 11033.0154536283. The cubic root of 121727430 is about 495.5979306431.

The spelling of 121727430 in words is "one hundred twenty-one million, seven hundred twenty-seven thousand, four hundred thirty".