72141906 has 8 divisors (see below), whose sum is σ = 144283824. Its totient is φ = 24047300.

The previous prime is 72141889. The next prime is 72141913. The reversal of 72141906 is 60914127.

It is a happy number.

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

72141906 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6011820 + ... + 6011831.

It is an arithmetic number, because the mean of its divisors is an integer number (18035478).

Almost surely, 2^72141906 is an apocalyptic number.

72141906 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.

72141906 is a wasteful number, since it uses less digits than its factorization.

72141906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023656.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 72141906 is about 8493.6391493870. The cubic root of 72141906 is about 416.2898967070.

The spelling of 72141906 in words is "seventy-two million, one hundred forty-one thousand, nine hundred six".