121342420 has 48 divisors (see below), whose sum is σ = 262483200. Its totient is φ = 47099520.

The previous prime is 121342393. The next prime is 121342421. The reversal of 121342420 is 24243121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95751 + ... + 97009.

It is an arithmetic number, because the mean of its divisors is an integer number (5468400).

Almost surely, 2^121342420 is an apocalyptic number.

121342420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121342420 is an abundant number, since it is smaller than the sum of its proper divisors (141140780).

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

121342420 is a wasteful number, since it uses less digits than its factorization.

121342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121342420 is about 11015.5535494137. The cubic root of 121342420 is about 495.0748721898.

Adding to 121342420 its reverse (24243121), we get a palindrome (145585541).

The spelling of 121342420 in words is "one hundred twenty-one million, three hundred forty-two thousand, four hundred twenty".