68657042 has 16 divisors (see below), whose sum is σ = 106189272. Its totient is φ = 33271680.

The previous prime is 68657041. The next prime is 68657059. The reversal of 68657042 is 24075686.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57441241 + 11215801 = 7579^2 + 3349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68656987 and 68657005.

It is not an unprimeable number, because it can be changed into a prime (68657041) 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, 10208 + ... + 15540.

Almost surely, 2^68657042 is an apocalyptic number.

68657042 is a deficient number, since it is larger than the sum of its proper divisors (37532230).

68657042 is a wasteful number, since it uses less digits than its factorization.

68657042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 68657042 is about 8285.9545014440. The cubic root of 68657042 is about 409.4759157383.

The spelling of 68657042 in words is "sixty-eight million, six hundred fifty-seven thousand, forty-two".