68142634 has 24 divisors (see below), whose sum is σ = 123007140. Its totient is φ = 28195776.

The previous prime is 68142631. The next prime is 68142643. The reversal of 68142634 is 43624186.

It can be written as a sum of positive squares in 2 ways, for example, as 68112009 + 30625 = 8253^2 + 175^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68142634.

It is not an unprimeable number, because it can be changed into a prime (68142631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9147 + ... + 14830.

Almost surely, 2^68142634 is an apocalyptic number.

68142634 is a deficient number, since it is larger than the sum of its proper divisors (54864506).

68142634 is a wasteful number, since it uses less digits than its factorization.

68142634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24022 (or 24015 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 68142634 is about 8254.8551774092. The cubic root of 68142634 is about 408.4506946100.

The spelling of 68142634 in words is "sixty-eight million, one hundred forty-two thousand, six hundred thirty-four".