68499942 has 48 divisors (see below), whose sum is σ = 160526592. Its totient is φ = 19429200.

The previous prime is 68499941. The next prime is 68499947. The reversal of 68499942 is 24999486.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68499941) 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 23 ways as a sum of consecutive naturals, for example, 43623 + ... + 45165.

It is an arithmetic number, because the mean of its divisors is an integer number (3344304).

Almost surely, 2^68499942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68499942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80263296).

68499942 is an abundant number, since it is smaller than the sum of its proper divisors (92026650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68499942 is a wasteful number, since it uses less digits than its factorization.

68499942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1706 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 68499942 is about 8276.4691747145. The cubic root of 68499942 is about 409.1633583650.

It can be divided in two parts, 6 and 8499942, that added together give a palindrome (8499948).

The spelling of 68499942 in words is "sixty-eight million, four hundred ninety-nine thousand, nine hundred forty-two".