121023400 has 24 divisors (see below), whose sum is σ = 281379870. Its totient is φ = 48409280.

The previous prime is 121023389. The next prime is 121023437. The reversal of 121023400 is 4320121.

It can be written as a sum of positive squares in 3 ways, for example, as 94128804 + 26894596 = 9702^2 + 5186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302359 + ... + 302758.

Almost surely, 2^121023400 is an apocalyptic number.

121023400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121023400 is an abundant number, since it is smaller than the sum of its proper divisors (160356470).

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

121023400 is a wasteful number, since it uses less digits than its factorization.

121023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605133 (or 605124 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121023400 is about 11001.0635849449. The cubic root of 121023400 is about 494.6406261392.

Adding to 121023400 its reverse (4320121), we get a palindrome (125343521).

The spelling of 121023400 in words is "one hundred twenty-one million, twenty-three thousand, four hundred".