67142818 has 8 divisors (see below), whose sum is σ = 101752812. Its totient is φ = 33225216.

The previous prime is 67142813. The next prime is 67142849. The reversal of 67142818 is 81824176.

It can be written as a sum of positive squares in 2 ways, for example, as 63154809 + 3988009 = 7947^2 + 1997^2 .

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

It is a super-2 number, since 2×67142818² = 9016316017962248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67142813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172855 + ... + 173242.

Almost surely, 2^67142818 is an apocalyptic number.

67142818 is a deficient number, since it is larger than the sum of its proper divisors (34609994).

67142818 is a wasteful number, since it uses less digits than its factorization.

67142818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346196.

The product of its digits is 21504, while the sum is 37.

The square root of 67142818 is about 8194.0721256284. The cubic root of 67142818 is about 406.4431933820.

The spelling of 67142818 in words is "sixty-seven million, one hundred forty-two thousand, eight hundred eighteen".