1372720043 has 4 divisors (see below), whose sum is σ = 1372813728. Its totient is φ = 1372626360.

The previous prime is 1372720039. The next prime is 1372720079. The reversal of 1372720043 is 3400272731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1372720043 - 2² = 1372720039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1372719988 and 1372720015.

It is not an unprimeable number, because it can be changed into a prime (1372720093) 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, 19571 + ... + 55932.

It is an arithmetic number, because the mean of its divisors is an integer number (343203432).

Almost surely, 2^1372720043 is an apocalyptic number.

1372720043 is a deficient number, since it is larger than the sum of its proper divisors (93685).

1372720043 is an equidigital number, since it uses as much as digits as its factorization.

1372720043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93684.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 1372720043 is about 37050.2367468819. The cubic root of 1372720043 is about 1111.3750896296.

Adding to 1372720043 its reverse (3400272731), we get a palindrome (4772992774).

The spelling of 1372720043 in words is "one billion, three hundred seventy-two million, seven hundred twenty thousand, forty-three".