1372145 has 8 divisors (see below), whose sum is σ = 1691304. Its totient is φ = 1067904.

The previous prime is 1372139. The next prime is 1372171. The reversal of 1372145 is 5412731.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 776161 = 772^2 + 881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1372145 - 2⁶ = 1372081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524 + ... + 3893.

It is an arithmetic number, because the mean of its divisors is an integer number (211413).

2^1372145 is an apocalyptic number.

It is an amenable number.

1372145 is a deficient number, since it is larger than the sum of its proper divisors (319159).

1372145 is an equidigital number, since it uses as much as digits as its factorization.

1372145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7459.

The product of its digits is 840, while the sum is 23.

The square root of 1372145 is about 1171.3859312797. The cubic root of 1372145 is about 111.1219880093.

Adding to 1372145 its reverse (5412731), we get a palindrome (6784876).

The spelling of 1372145 in words is "one million, three hundred seventy-two thousand, one hundred forty-five".