72242442001 has 4 divisors (see below), whose sum is σ = 73320687472. Its totient is φ = 71164196532.

The previous prime is 72242441911. The next prime is 72242442047. The reversal of 72242442001 is 10024424227.

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 72242442001 - 2¹¹ = 72242439953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72242442301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539122635 + ... + 539122768.

It is an arithmetic number, because the mean of its divisors is an integer number (18330171868).

Almost surely, 2^72242442001 is an apocalyptic number.

It is an amenable number.

72242442001 is a deficient number, since it is larger than the sum of its proper divisors (1078245471).

72242442001 is a wasteful number, since it uses less digits than its factorization.

72242442001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078245470.

The product of its (nonzero) digits is 7168, while the sum is 28.

Adding to 72242442001 its reverse (10024424227), we get a palindrome (82266866228).

It can be divided in two parts, 7224 and 2442001, that added together give a square (2449225 = 1565²).

The spelling of 72242442001 in words is "seventy-two billion, two hundred forty-two million, four hundred forty-two thousand, one".