404025542 has 16 divisors (see below), whose sum is σ = 626331264. Its totient is φ = 195467400.

The previous prime is 404025541. The next prime is 404025577. The reversal of 404025542 is 245520404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404025541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56192 + ... + 62972.

It is an arithmetic number, because the mean of its divisors is an integer number (39145704).

Almost surely, 2^404025542 is an apocalyptic number.

404025542 is a deficient number, since it is larger than the sum of its proper divisors (222305722).

404025542 is an frugal number, since it uses more digits than its factorization.

404025542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6876 (or 6814 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 404025542 is about 20100.3866131973. The cubic root of 404025542 is about 739.2697580759.

Adding to 404025542 its reverse (245520404), we get a palindrome (649545946).

The spelling of 404025542 in words is "four hundred four million, twenty-five thousand, five hundred forty-two".