1376145 has 24 divisors (see below), whose sum is σ = 2434536. Its totient is φ = 718848.

The previous prime is 1376131. The next prime is 1376147. The reversal of 1376145 is 5416731.

It can be written as a sum of positive squares in 4 ways, for example, as 690561 + 685584 = 831^2 + 828^2 .

It is not a de Polignac number, because 1376145 - 2⁷ = 1376017 is a prime.

It is a super-2 number, since 2×1376145² = 3787550122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1376147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2097 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (101439).

2^1376145 is an apocalyptic number.

1376145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376145 is a deficient number, since it is larger than the sum of its proper divisors (1058391).

1376145 is a wasteful number, since it uses less digits than its factorization.

1376145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1376145 is about 1173.0920679981. The cubic root of 1376145 is about 111.2298621127.

It can be divided in two parts, 1376 and 145, that added together give a square (1521 = 39²).

The spelling of 1376145 in words is "one million, three hundred seventy-six thousand, one hundred forty-five".