404021243542 has 32 divisors (see below), whose sum is σ = 697482580032. Its totient is φ = 171937551744.

The previous prime is 404021243519. The next prime is 404021243599. The reversal of 404021243542 is 245342120404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 958468 + ... + 1314040.

It is an arithmetic number, because the mean of its divisors is an integer number (21796330626).

Almost surely, 2^404021243542 is an apocalyptic number.

404021243542 is a deficient number, since it is larger than the sum of its proper divisors (293461336490).

404021243542 is a wasteful number, since it uses less digits than its factorization.

404021243542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356152.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 404021243542 its reverse (245342120404), we get a palindrome (649363363946).

The spelling of 404021243542 in words is "four hundred four billion, twenty-one million, two hundred forty-three thousand, five hundred forty-two".