67139742 has 8 divisors (see below), whose sum is σ = 134279496. Its totient is φ = 22379912.

The previous prime is 67139729. The next prime is 67139771. The reversal of 67139742 is 24793176.

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

67139742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 67139742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5594973 + ... + 5594984.

It is an arithmetic number, because the mean of its divisors is an integer number (16784937).

Almost surely, 2^67139742 is an apocalyptic number.

67139742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

67139742 is a wasteful number, since it uses less digits than its factorization.

67139742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11189962.

The product of its digits is 63504, while the sum is 39.

The square root of 67139742 is about 8193.8844268149. The cubic root of 67139742 is about 406.4369865213.

The spelling of 67139742 in words is "sixty-seven million, one hundred thirty-nine thousand, seven hundred forty-two".