67378542 has 128 divisors (see below), whose sum is σ = 179159040. Its totient is φ = 16383360.

The previous prime is 67378537. The next prime is 67378543. The reversal of 67378542 is 24587376.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 67378494 and 67378503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67378543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 629653 + ... + 629759.

It is an arithmetic number, because the mean of its divisors is an integer number (1399680).

Almost surely, 2^67378542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67378542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89579520).

67378542 is an abundant number, since it is smaller than the sum of its proper divisors (111780498).

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

67378542 is a wasteful number, since it uses less digits than its factorization.

67378542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its digits is 282240, while the sum is 42.

The square root of 67378542 is about 8208.4433359803. The cubic root of 67378542 is about 406.9182827285.

The spelling of 67378542 in words is "sixty-seven million, three hundred seventy-eight thousand, five hundred forty-two".