121041928 has 32 divisors (see below), whose sum is σ = 260164800. Its totient is φ = 51717312.

The previous prime is 121041923. The next prime is 121041929. The reversal of 121041928 is 829140121.

It is a super-2 number, since 2×121041928² = 29302296667914368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 121041896 and 121041905.

It is not an unprimeable number, because it can be changed into a prime (121041923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16318 + ... + 22546.

It is an arithmetic number, because the mean of its divisors is an integer number (8130150).

Almost surely, 2^121041928 is an apocalyptic number.

It is an amenable number.

121041928 is an abundant number, since it is smaller than the sum of its proper divisors (139122872).

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

121041928 is a wasteful number, since it uses less digits than its factorization.

121041928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589 (or 6585 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 121041928 is about 11001.9056531130. The cubic root of 121041928 is about 494.6658670813.

The spelling of 121041928 in words is "one hundred twenty-one million, forty-one thousand, nine hundred twenty-eight".