68742159 has 8 divisors (see below), whose sum is σ = 94612992. Its totient is φ = 44349720.

The previous prime is 68742127. The next prime is 68742197. The reversal of 68742159 is 95124786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68742159 - 2⁵ = 68742127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68742159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68742959) 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, 369489 + ... + 369674.

It is an arithmetic number, because the mean of its divisors is an integer number (11826624).

Almost surely, 2^68742159 is an apocalyptic number.

68742159 is a deficient number, since it is larger than the sum of its proper divisors (25870833).

68742159 is a wasteful number, since it uses less digits than its factorization.

68742159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739197.

The product of its digits is 120960, while the sum is 42.

The square root of 68742159 is about 8291.0891323155. The cubic root of 68742159 is about 409.6450606522.

The spelling of 68742159 in words is "sixty-eight million, seven hundred forty-two thousand, one hundred fifty-nine".