1392106 has 4 divisors (see below), whose sum is σ = 2088162. Its totient is φ = 696052.

The previous prime is 1392103. The next prime is 1392133. The reversal of 1392106 is 6012931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6012931 = 523 ⋅11497.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 58081 = 1155^2 + 241^2 .

It is not an unprimeable number, because it can be changed into a prime (1392101) 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 as a sum of consecutive naturals, namely, 348025 + ... + 348028.

2^1392106 is an apocalyptic number.

1392106 is a deficient number, since it is larger than the sum of its proper divisors (696056).

1392106 is an equidigital number, since it uses as much as digits as its factorization.

1392106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696055.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1392106 is about 1179.8754171522. The cubic root of 1392106 is about 111.6582375262.

It can be divided in two parts, 13 and 92106, that multiplied together give a triangular number (1197378 = T₁₅₄₇).

The spelling of 1392106 in words is "one million, three hundred ninety-two thousand, one hundred six".