404148420 has 96 divisors (see below), whose sum is σ = 1354093440. Its totient is φ = 99480960.

The previous prime is 404148419. The next prime is 404148421. The reversal of 404148420 is 24841404.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (404148419) and next prime (404148421).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (404148421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21766 + ... + 35805.

It is an arithmetic number, because the mean of its divisors is an integer number (14105140).

Almost surely, 2^404148420 is an apocalyptic number.

It is an amenable number.

404148420 is an abundant number, since it is smaller than the sum of its proper divisors (949945020).

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

404148420 is a wasteful number, since it uses less digits than its factorization.

404148420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57602 (or 57594 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 404148420 is about 20103.4429887022. The cubic root of 404148420 is about 739.3446962273.

Adding to 404148420 its reverse (24841404), we get a palindrome (428989824).

The spelling of 404148420 in words is "four hundred four million, one hundred forty-eight thousand, four hundred twenty".