68142955 has 8 divisors (see below), whose sum is σ = 82495872. Its totient is φ = 54031488.

The previous prime is 68142923. The next prime is 68142959. The reversal of 68142955 is 55924186.

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

It is a cyclic number.

It is not a de Polignac number, because 68142955 - 2⁵ = 68142923 is a prime.

It is a super-2 number, since 2×68142955² = 9286924632264050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68142959) 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, 59739 + ... + 60868.

It is an arithmetic number, because the mean of its divisors is an integer number (10311984).

Almost surely, 2^68142955 is an apocalyptic number.

68142955 is a deficient number, since it is larger than the sum of its proper divisors (14352917).

68142955 is a wasteful number, since it uses less digits than its factorization.

68142955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120725.

The product of its digits is 86400, while the sum is 40.

The square root of 68142955 is about 8254.8746204894. The cubic root of 68142955 is about 408.4513359729.

The spelling of 68142955 in words is "sixty-eight million, one hundred forty-two thousand, nine hundred fifty-five".