404142542 has 8 divisors (see below), whose sum is σ = 612099696. Its totient is φ = 200109312.

The previous prime is 404142539. The next prime is 404142551. The reversal of 404142542 is 245241404.

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

It is a congruent 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, 980723 + ... + 981134.

It is an arithmetic number, because the mean of its divisors is an integer number (76512462).

Almost surely, 2^404142542 is an apocalyptic number.

404142542 is a deficient number, since it is larger than the sum of its proper divisors (207957154).

404142542 is a wasteful number, since it uses less digits than its factorization.

404142542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961962.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 404142542 is about 20103.2967943071. The cubic root of 404142542 is about 739.3411118270.

Adding to 404142542 its reverse (245241404), we get a palindrome (649383946).

The spelling of 404142542 in words is "four hundred four million, one hundred forty-two thousand, five hundred forty-two".