1270406 has 4 divisors (see below), whose sum is σ = 1905612. Its totient is φ = 635202.

The previous prime is 1270391. The next prime is 1270417. The reversal of 1270406 is 6040721.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1270406² = 3227862809672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317600 + ... + 317603.

It is an arithmetic number, because the mean of its divisors is an integer number (476403).

2^1270406 is an apocalyptic number.

1270406 is a deficient number, since it is larger than the sum of its proper divisors (635206).

1270406 is an equidigital number, since it uses as much as digits as its factorization.

1270406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635205.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1270406 is about 1127.1228859357. The cubic root of 1270406 is about 108.3047519604.

It can be divided in two parts, 1270 and 406, that multiplied together give a triangular number (515620 = T₁₀₁₅).

The spelling of 1270406 in words is "one million, two hundred seventy thousand, four hundred six".