1984542 has 16 divisors (see below), whose sum is σ = 4536192. Its totient is φ = 567000.

The previous prime is 1984537. The next prime is 1984547. The reversal of 1984542 is 2454891.

It is an interprime number because it is at equal distance from previous prime (1984537) and next prime (1984547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984547) 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, 23584 + ... + 23667.

It is an arithmetic number, because the mean of its divisors is an integer number (283512).

2^1984542 is an apocalyptic number.

1984542 is an abundant number, since it is smaller than the sum of its proper divisors (2551650).

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

1984542 is a wasteful number, since it uses less digits than its factorization.

1984542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47263.

The product of its digits is 11520, while the sum is 33.

The square root of 1984542 is about 1408.7377328658. The cubic root of 1984542 is about 125.6666674484. Note that the first 5 decimals are identical.

The spelling of 1984542 in words is "one million, nine hundred eighty-four thousand, five hundred forty-two".