121403418 has 8 divisors (see below), whose sum is σ = 242806848. Its totient is φ = 40467804.

The previous prime is 121403413. The next prime is 121403431. The reversal of 121403418 is 814304121.

It is a sphenic number, since it is the product of 3 distinct primes.

121403418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (121403411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10116946 + ... + 10116957.

It is an arithmetic number, because the mean of its divisors is an integer number (30350856).

Almost surely, 2^121403418 is an apocalyptic number.

121403418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121403418 is a wasteful number, since it uses less digits than its factorization.

121403418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20233908.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 121403418 is about 11018.3219230516. The cubic root of 121403418 is about 495.1578152042.

Adding to 121403418 its reverse (814304121), we get a palindrome (935707539).

The spelling of 121403418 in words is "one hundred twenty-one million, four hundred three thousand, four hundred eighteen".