404130642 has 8 divisors (see below), whose sum is σ = 808261296. Its totient is φ = 134710212.

The previous prime is 404130611. The next prime is 404130653. The reversal of 404130642 is 246031404.

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

404130642 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33677548 + ... + 33677559.

It is an arithmetic number, because the mean of its divisors is an integer number (101032662).

Almost surely, 2^404130642 is an apocalyptic number.

404130642 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.

404130642 is a wasteful number, since it uses less digits than its factorization.

404130642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67355112.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 404130642 is about 20103.0008207730. Note that the first 3 decimals coincide. The cubic root of 404130642 is about 739.3338551088. Note that the first 3 decimals are identical.

The spelling of 404130642 in words is "four hundred four million, one hundred thirty thousand, six hundred forty-two".