121338438 has 32 divisors (see below), whose sum is σ = 262404576. Its totient is φ = 37183488.

The previous prime is 121338419. The next prime is 121338461. The reversal of 121338438 is 834833121.

It is a junction number, because it is equal to n+sod(n) for n = 121338399 and 121338408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17020 + ... + 23072.

It is an arithmetic number, because the mean of its divisors is an integer number (8200143).

Almost surely, 2^121338438 is an apocalyptic number.

121338438 is an abundant number, since it is smaller than the sum of its proper divisors (141066138).

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

121338438 is a wasteful number, since it uses less digits than its factorization.

121338438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6328.

The product of its digits is 13824, while the sum is 33.

The square root of 121338438 is about 11015.3728034960. The cubic root of 121338438 is about 495.0694566346.

The spelling of 121338438 in words is "one hundred twenty-one million, three hundred thirty-eight thousand, four hundred thirty-eight".