1378741 has 16 divisors (see below), whose sum is σ = 1724800. Its totient is φ = 1073088.

The previous prime is 1378733. The next prime is 1378759. The reversal of 1378741 is 1478731.

It is a cyclic number.

It is not a de Polignac number, because 1378741 - 2³ = 1378733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9850 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (107800).

2^1378741 is an apocalyptic number.

It is an amenable number.

1378741 is a deficient number, since it is larger than the sum of its proper divisors (346059).

1378741 is a wasteful number, since it uses less digits than its factorization.

1378741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its digits is 4704, while the sum is 31.

The square root of 1378741 is about 1174.1980241850. The cubic root of 1378741 is about 111.2997605952.

The spelling of 1378741 in words is "one million, three hundred seventy-eight thousand, seven hundred forty-one".