67839742 has 16 divisors (see below), whose sum is σ = 106831872. Its totient is φ = 32247160.

The previous prime is 67839731. The next prime is 67839743. The reversal of 67839742 is 24793876.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 67839692 and 67839701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67839743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267 + ... + 12097.

It is an arithmetic number, because the mean of its divisors is an integer number (6676992).

Almost surely, 2^67839742 is an apocalyptic number.

67839742 is a deficient number, since it is larger than the sum of its proper divisors (38992130).

67839742 is a wasteful number, since it uses less digits than its factorization.

67839742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023.

The product of its digits is 508032, while the sum is 46.

The square root of 67839742 is about 8236.4884507902. The cubic root of 67839742 is about 407.8446119476.

The spelling of 67839742 in words is "sixty-seven million, eight hundred thirty-nine thousand, seven hundred forty-two".