1372731417242 has 4 divisors (see below), whose sum is σ = 2059097125866. Its totient is φ = 686365708620.

The previous prime is 1372731417241. The next prime is 1372731417263. The reversal of 1372731417242 is 2427141372731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 964856317441 + 407875099801 = 982271^2 + 638651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1372731417193 and 1372731417202.

It is not an unprimeable number, because it can be changed into a prime (1372731417241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343182854309 + ... + 343182854312.

Almost surely, 2^{1372731417242} is an apocalyptic number.

1372731417242 is a deficient number, since it is larger than the sum of its proper divisors (686365708624).

1372731417242 is an equidigital number, since it uses as much as digits as its factorization.

1372731417242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686365708623.

The product of its digits is 395136, while the sum is 44.

Adding to 1372731417242 its reverse (2427141372731), we get a palindrome (3799872789973).

The spelling of 1372731417242 in words is "one trillion, three hundred seventy-two billion, seven hundred thirty-one million, four hundred seventeen thousand, two hundred forty-two".