68042629 has 4 divisors (see below), whose sum is σ = 71623840. Its totient is φ = 64461420.

The previous prime is 68042617. The next prime is 68042651. The reversal of 68042629 is 92624086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68042629 - 2²⁵ = 34488197 is a prime.

It is a super-2 number, since 2×68042629² = 9259598722463282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68042609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790577 + ... + 1790614.

It is an arithmetic number, because the mean of its divisors is an integer number (17905960).

Almost surely, 2^68042629 is an apocalyptic number.

It is an amenable number.

68042629 is a deficient number, since it is larger than the sum of its proper divisors (3581211).

68042629 is a wasteful number, since it uses less digits than its factorization.

68042629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581210.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68042629 is about 8248.7956090571. The cubic root of 68042629 is about 408.2507849607.

The spelling of 68042629 in words is "sixty-eight million, forty-two thousand, six hundred twenty-nine".