1366542 has 36 divisors (see below), whose sum is σ = 3098160. Its totient is φ = 435240.

The previous prime is 1366531. The next prime is 1366543. The reversal of 1366542 is 2456631.

1366542 is a `hidden beast` number, since 1 + 3 + 6 + 654 + 2 = 666.

It is a super-3 number, since 3×1366542³ = 7655793433380276264, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366543) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17259 + ... + 17337.

It is an arithmetic number, because the mean of its divisors is an integer number (86060).

2^1366542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549080).

1366542 is an abundant number, since it is smaller than the sum of its proper divisors (1731618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366542 is a wasteful number, since it uses less digits than its factorization.

1366542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 115 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1366542 is about 1168.9918733678. The cubic root of 1366542 is about 110.9705302824.

The spelling of 1366542 in words is "one million, three hundred sixty-six thousand, five hundred forty-two".