67121142 has 32 divisors (see below), whose sum is σ = 146759040. Its totient is φ = 20296320.

The previous prime is 67121101. The next prime is 67121143. The reversal of 67121142 is 24112176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67121143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44334 + ... + 45822.

It is an arithmetic number, because the mean of its divisors is an integer number (4586220).

Almost surely, 2^67121142 is an apocalyptic number.

67121142 is an abundant number, since it is smaller than the sum of its proper divisors (79637898).

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

67121142 is a wasteful number, since it uses less digits than its factorization.

67121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188.

The product of its digits is 672, while the sum is 24.

The square root of 67121142 is about 8192.7493553752. The cubic root of 67121142 is about 406.3994507492.

The spelling of 67121142 in words is "sixty-seven million, one hundred twenty-one thousand, one hundred forty-two".