121435020 has 72 divisors (see below), whose sum is σ = 420979104. Its totient is φ = 27756288.

The previous prime is 121435007. The next prime is 121435037. The reversal of 121435020 is 20534121.

121435020 is a `hidden beast` number, since 121 + 43 + 502 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121434984 and 121435002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46929 + ... + 49448.

It is an arithmetic number, because the mean of its divisors is an integer number (5846932).

Almost surely, 2^121435020 is an apocalyptic number.

121435020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121435020 is an abundant number, since it is smaller than the sum of its proper divisors (299544084).

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

121435020 is a wasteful number, since it uses less digits than its factorization.

121435020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96399 (or 96394 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 121435020 is about 11019.7558956630. The cubic root of 121435020 is about 495.2007756083.

Adding to 121435020 its reverse (20534121), we get a palindrome (141969141).

The spelling of 121435020 in words is "one hundred twenty-one million, four hundred thirty-five thousand, twenty".