1018542 has 16 divisors (see below), whose sum is σ = 2328192. Its totient is φ = 291000.

The previous prime is 1018513. The next prime is 1018543. The reversal of 1018542 is 2458101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12084 + ... + 12167.

It is an arithmetic number, because the mean of its divisors is an integer number (145512).

2^1018542 is an apocalyptic number.

1018542 is an abundant number, since it is smaller than the sum of its proper divisors (1309650).

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

1018542 is a wasteful number, since it uses less digits than its factorization.

1018542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24263.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1018542 is about 1009.2284181492. The cubic root of 1018542 is about 100.6142854736.

The spelling of 1018542 in words is "one million, eighteen thousand, five hundred forty-two".