657045042 has 16 divisors (see below), whose sum is σ = 1383252960. Its totient is φ = 207487872.

The previous prime is 657044987. The next prime is 657045043. The reversal of 657045042 is 240540756.

657045042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 657044994 and 657045012.

It is not an unprimeable number, because it can be changed into a prime (657045043) 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, 2881663 + ... + 2881890.

It is an arithmetic number, because the mean of its divisors is an integer number (86453310).

Almost surely, 2^657045042 is an apocalyptic number.

657045042 is an abundant number, since it is smaller than the sum of its proper divisors (726207918).

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

657045042 is a wasteful number, since it uses less digits than its factorization.

657045042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763577.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 657045042 is about 25632.8898487861. The cubic root of 657045042 is about 869.3574513047.

Adding to 657045042 its reverse (240540756), we get a palindrome (897585798).

The spelling of 657045042 in words is "six hundred fifty-seven million, forty-five thousand, forty-two".