72242097 has 4 divisors (see below), whose sum is σ = 96322800. Its totient is φ = 48161396.

The previous prime is 72242087. The next prime is 72242099. The reversal of 72242097 is 79024227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72242097 - 2⁶ = 72242033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72242099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12040347 + ... + 12040352.

It is an arithmetic number, because the mean of its divisors is an integer number (24080700).

Almost surely, 2^72242097 is an apocalyptic number.

It is an amenable number.

72242097 is a deficient number, since it is larger than the sum of its proper divisors (24080703).

72242097 is a wasteful number, since it uses less digits than its factorization.

72242097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24080702.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72242097 is about 8499.5351049337. The cubic root of 72242097 is about 416.4825226481.

The spelling of 72242097 in words is "seventy-two million, two hundred forty-two thousand, ninety-seven".