1372273217242 has 16 divisors (see below), whose sum is σ = 2059638505632. Its totient is φ = 685727177680.

The previous prime is 1372273217197. The next prime is 1372273217243. The reversal of 1372273217242 is 2427123722731.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1372273217243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23800773 + ... + 23858359.

It is an arithmetic number, because the mean of its divisors is an integer number (128727406602).

Almost surely, 2^{1372273217242} is an apocalyptic number.

1372273217242 is a deficient number, since it is larger than the sum of its proper divisors (687365288390).

1372273217242 is a wasteful number, since it uses less digits than its factorization.

1372273217242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64493.

The product of its digits is 395136, while the sum is 43.

Adding to 1372273217242 its reverse (2427123722731), we get a palindrome (3799396939973).

The spelling of 1372273217242 in words is "one trillion, three hundred seventy-two billion, two hundred seventy-three million, two hundred seventeen thousand, two hundred forty-two".