1372143 has 4 divisors (see below), whose sum is σ = 1829528. Its totient is φ = 914760.

The previous prime is 1372139. The next prime is 1372171. The reversal of 1372143 is 3412731.

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

It is not a de Polignac number, because 1372143 - 2² = 1372139 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372103) 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, 228688 + ... + 228693.

It is an arithmetic number, because the mean of its divisors is an integer number (457382).

2^1372143 is an apocalyptic number.

1372143 is a deficient number, since it is larger than the sum of its proper divisors (457385).

1372143 is an equidigital number, since it uses as much as digits as its factorization.

1372143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457384.

The product of its digits is 504, while the sum is 21.

The square root of 1372143 is about 1171.3850775898. The cubic root of 1372143 is about 111.1219340198.

Adding to 1372143 its reverse (3412731), we get a palindrome (4784874).

The spelling of 1372143 in words is "one million, three hundred seventy-two thousand, one hundred forty-three".