1371406 has 8 divisors (see below), whose sum is σ = 2062944. Its totient is φ = 683760.

The previous prime is 1371397. The next prime is 1371431. The reversal of 1371406 is 6041731.

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

It is a d-powerful number, because it can be written as 1 + 3¹² + 7⁷ + 1 + 4⁷ + 0 + 6² .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186 + ... + 1666.

It is an arithmetic number, because the mean of its divisors is an integer number (257868).

2^1371406 is an apocalyptic number.

1371406 is a deficient number, since it is larger than the sum of its proper divisors (691538).

1371406 is a wasteful number, since it uses less digits than its factorization.

1371406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1371406 is about 1171.0704504854. The cubic root of 1371406 is about 111.1020353328.

The spelling of 1371406 in words is "one million, three hundred seventy-one thousand, four hundred six".