121320408 has 48 divisors (see below), whose sum is σ = 333388440. Its totient is φ = 36762880.

The previous prime is 121320403. The next prime is 121320481. The reversal of 121320408 is 804023121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17985 + ... + 23792.

Almost surely, 2^121320408 is an apocalyptic number.

It is an amenable number.

121320408 is an abundant number, since it is smaller than the sum of its proper divisors (212068032).

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

121320408 is a wasteful number, since it uses less digits than its factorization.

121320408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41808 (or 41793 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121320408 is about 11014.5543713761. The cubic root of 121320408 is about 495.0449341925.

Adding to 121320408 its reverse (804023121), we get a palindrome (925343529).

The spelling of 121320408 in words is "one hundred twenty-one million, three hundred twenty thousand, four hundred eight".