404121354 has 64 divisors (see below), whose sum is σ = 1009698816. Its totient is φ = 104981184.

The previous prime is 404121307. The next prime is 404121371. The reversal of 404121354 is 453121404.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31059 + ... + 42105.

It is an arithmetic number, because the mean of its divisors is an integer number (15776544).

Almost surely, 2^404121354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404121354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504849408).

404121354 is an abundant number, since it is smaller than the sum of its proper divisors (605577462).

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

404121354 is a wasteful number, since it uses less digits than its factorization.

404121354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11139.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 404121354 is about 20102.7698091581. The cubic root of 404121354 is about 739.3281911108.

Adding to 404121354 its reverse (453121404), we get a palindrome (857242758).

Subtracting 404121354 from its reverse (453121404), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 404121354 in words is "four hundred four million, one hundred twenty-one thousand, three hundred fifty-four".