1378071 has 12 divisors (see below), whose sum is σ = 2107872. Its totient is φ = 864576.

The previous prime is 1378067. The next prime is 1378073. The reversal of 1378071 is 1708731.

It is not a de Polignac number, because 1378071 - 2² = 1378067 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4351 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (175656).

2^1378071 is an apocalyptic number.

1378071 is a deficient number, since it is larger than the sum of its proper divisors (729801).

1378071 is a wasteful number, since it uses less digits than its factorization.

1378071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030 (or 9027 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 1378071 is about 1173.9126884057. The cubic root of 1378071 is about 111.2817289460.

The spelling of 1378071 in words is "one million, three hundred seventy-eight thousand, seventy-one".