67142744 has 8 divisors (see below), whose sum is σ = 125892660. Its totient is φ = 33571368.

The previous prime is 67142731. The next prime is 67142749. The reversal of 67142744 is 44724176.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67142749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4196414 + ... + 4196429.

Almost surely, 2^67142744 is an apocalyptic number.

It is an amenable number.

67142744 is a deficient number, since it is larger than the sum of its proper divisors (58749916).

67142744 is a wasteful number, since it uses less digits than its factorization.

67142744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8392849 (or 8392845 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 67142744 is about 8194.0676101677. The cubic root of 67142744 is about 406.4430440644.

The spelling of 67142744 in words is "sixty-seven million, one hundred forty-two thousand, seven hundred forty-four".