657119042 has 4 divisors (see below), whose sum is σ = 985678566. Its totient is φ = 328559520.

The previous prime is 657118999. The next prime is 657119087. The reversal of 657119042 is 240911756.

657119042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 528954001 + 128165041 = 22999^2 + 11321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 657118993 and 657119011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164279759 + ... + 164279762.

Almost surely, 2^657119042 is an apocalyptic number.

657119042 is a deficient number, since it is larger than the sum of its proper divisors (328559524).

657119042 is a wasteful number, since it uses less digits than its factorization.

657119042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328559523.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 657119042 is about 25634.3332661491. Note that the first 3 decimals coincide. The cubic root of 657119042 is about 869.3900873405.

The spelling of 657119042 in words is "six hundred fifty-seven million, one hundred nineteen thousand, forty-two".