404011142 has 4 divisors (see below), whose sum is σ = 606016716. Its totient is φ = 202005570.

The previous prime is 404011099. The next prime is 404011147. The reversal of 404011142 is 241110404.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 404011142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404011147) 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 as a sum of consecutive naturals, namely, 101002784 + ... + 101002787.

It is an arithmetic number, because the mean of its divisors is an integer number (151504179).

Almost surely, 2^404011142 is an apocalyptic number.

404011142 is a deficient number, since it is larger than the sum of its proper divisors (202005574).

404011142 is a wasteful number, since it uses less digits than its factorization.

404011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202005573.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 404011142 is about 20100.0284079401. The cubic root of 404011142 is about 739.2609751238.

Adding to 404011142 its reverse (241110404), we get a palindrome (645121546).

The spelling of 404011142 in words is "four hundred four million, eleven thousand, one hundred forty-two".