403648542 has 64 divisors (see below), whose sum is σ = 981976320. Its totient is φ = 121888800.

The previous prime is 403648541. The next prime is 403648547. The reversal of 403648542 is 245846304.

403648542 is a `hidden beast` number, since 4 + 0 + 3 + 648 + 5 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 403648497 and 403648506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403648541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195588 + ... + 197640.

It is an arithmetic number, because the mean of its divisors is an integer number (15343380).

Almost surely, 2^403648542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403648542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490988160).

403648542 is an abundant number, since it is smaller than the sum of its proper divisors (578327778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403648542 is a wasteful number, since it uses less digits than its factorization.

403648542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406 (or 2400 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 403648542 is about 20091.0064954447. The cubic root of 403648542 is about 739.0397466847.

The spelling of 403648542 in words is "four hundred three million, six hundred forty-eight thousand, five hundred forty-two".