68770142 has 16 divisors (see below), whose sum is σ = 118026240. Its totient is φ = 29439288.

The previous prime is 68770133. The next prime is 68770147. The reversal of 68770142 is 24107786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68770147) 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 7 ways as a sum of consecutive naturals, for example, 12959 + ... + 17477.

It is an arithmetic number, because the mean of its divisors is an integer number (7376640).

Almost surely, 2^68770142 is an apocalyptic number.

68770142 is a deficient number, since it is larger than the sum of its proper divisors (49256098).

68770142 is a wasteful number, since it uses less digits than its factorization.

68770142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 68770142 is about 8292.7764952397. The cubic root of 68770142 is about 409.7006381068.

The spelling of 68770142 in words is "sixty-eight million, seven hundred seventy thousand, one hundred forty-two".