355421004 has 12 divisors (see below), whose sum is σ = 829315704. Its totient is φ = 118473664.

The previous prime is 355420993. The next prime is 355421009. The reversal of 355421004 is 400124553.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (355421009) 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, 14809197 + ... + 14809220.

It is an arithmetic number, because the mean of its divisors is an integer number (69109642).

Almost surely, 2^355421004 is an apocalyptic number.

It is an amenable number.

355421004 is an abundant number, since it is smaller than the sum of its proper divisors (473894700).

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

355421004 is a wasteful number, since it uses less digits than its factorization.

355421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29618424 (or 29618422 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 355421004 is about 18852.6126571359. The cubic root of 355421004 is about 708.3496708696.

Adding to 355421004 its reverse (400124553), we get a palindrome (755545557).

The spelling of 355421004 in words is "three hundred fifty-five million, four hundred twenty-one thousand, four".