1006542 has 24 divisors (see below), whose sum is σ = 2199600. Its totient is φ = 332640.

The previous prime is 1006531. The next prime is 1006543. The reversal of 1006542 is 2456001.

It is a happy number.

1006542 is a `hidden beast` number, since 10 + 0 + 654 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006543) 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, 3442 + ... + 3722.

It is an arithmetic number, because the mean of its divisors is an integer number (91650).

2^1006542 is an apocalyptic number.

1006542 is an abundant number, since it is smaller than the sum of its proper divisors (1193058).

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

1006542 is a wasteful number, since it uses less digits than its factorization.

1006542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1006542 is about 1003.2656677072. The cubic root of 1006542 is about 100.2175928567.

The spelling of 1006542 in words is "one million, six thousand, five hundred forty-two".