68187042 has 192 divisors, whose sum is σ = 203857920. Its totient is φ = 16394400.

The previous prime is 68187001. The next prime is 68187047. The reversal of 68187042 is 24078186.

It is a junction number, because it is equal to n+sod(n) for n = 68186988 and 68187006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68187047) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2199567 + ... + 2199597.

It is an arithmetic number, because the mean of its divisors is an integer number (1061760).

Almost surely, 2^68187042 is an apocalyptic number.

68187042 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68187042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101928960).

68187042 is an abundant number, since it is smaller than the sum of its proper divisors (135670878).

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

68187042 is a wasteful number, since it uses less digits than its factorization.

68187042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 68187042 is about 8257.5445502885. The cubic root of 68187042 is about 408.5394033404.

The spelling of 68187042 in words is "sixty-eight million, one hundred eighty-seven thousand, forty-two".