1340181 has 12 divisors (see below), whose sum is σ = 1981408. Its totient is φ = 872424.

The previous prime is 1340179. The next prime is 1340221. The reversal of 1340181 is 1810431.

It is not a de Polignac number, because 1340181 - 2¹ = 1340179 is a prime.

It is a super-2 number, since 2×1340181² = 3592170225522, which contains 22 as substring.

It is a Duffinian number.

1340181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340281) 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, 1345 + ... + 2118.

2^1340181 is an apocalyptic number.

It is an amenable number.

1340181 is a deficient number, since it is larger than the sum of its proper divisors (641227).

1340181 is a wasteful number, since it uses less digits than its factorization.

1340181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1340181 is about 1157.6618677317. The cubic root of 1340181 is about 110.2523407959.

It can be divided in two parts, 1340 and 181, that added together give a square (1521 = 39²).

The spelling of 1340181 in words is "one million, three hundred forty thousand, one hundred eighty-one".