67147942 has 4 divisors (see below), whose sum is σ = 100721916. Its totient is φ = 33573970.

The previous prime is 67147939. The next prime is 67147987. The reversal of 67147942 is 24974176.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×67147942² = 9017692229670728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 67147895 and 67147904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16786984 + ... + 16786987.

It is an arithmetic number, because the mean of its divisors is an integer number (25180479).

Almost surely, 2^67147942 is an apocalyptic number.

67147942 is a deficient number, since it is larger than the sum of its proper divisors (33573974).

67147942 is a wasteful number, since it uses less digits than its factorization.

67147942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33573973.

The product of its digits is 84672, while the sum is 40.

The square root of 67147942 is about 8194.3847847169. The cubic root of 67147942 is about 406.4535323480.

The spelling of 67147942 in words is "sixty-seven million, one hundred forty-seven thousand, nine hundred forty-two".