121423340 has 24 divisors (see below), whose sum is σ = 255378480. Its totient is φ = 48495168.

The previous prime is 121423331. The next prime is 121423343. The reversal of 121423340 is 43324121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (121423343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9899 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (10640770).

Almost surely, 2^121423340 is an apocalyptic number.

121423340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121423340 is an abundant number, since it is smaller than the sum of its proper divisors (133955140).

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

121423340 is a wasteful number, since it uses less digits than its factorization.

121423340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9279 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 121423340 is about 11019.2259256265. The cubic root of 121423340 is about 495.1848984462.

Adding to 121423340 its reverse (43324121), we get a palindrome (164747461).

The spelling of 121423340 in words is "one hundred twenty-one million, four hundred twenty-three thousand, three hundred forty".