67242840 has 64 divisors (see below), whose sum is σ = 230549760. Its totient is φ = 15369600.

The previous prime is 67242839. The next prime is 67242859. The reversal of 67242840 is 4824276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39186 + ... + 40865.

It is an arithmetic number, because the mean of its divisors is an integer number (3602340).

Almost surely, 2^67242840 is an apocalyptic number.

67242840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67242840 is an abundant number, since it is smaller than the sum of its proper divisors (163306920).

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

67242840 is a wasteful number, since it uses less digits than its factorization.

67242840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80072 (or 80068 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 67242840 is about 8200.1731689032. The cubic root of 67242840 is about 406.6449180641.

The spelling of 67242840 in words is "sixty-seven million, two hundred forty-two thousand, eight hundred forty".