1994542 has 16 divisors (see below), whose sum is σ = 3456432. Its totient is φ = 853120.

The previous prime is 1994521. The next prime is 1994543. The reversal of 1994542 is 2454991.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1994498 and 1994507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994543) 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, 2293 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (216027).

2^1994542 is an apocalyptic number.

1994542 is a deficient number, since it is larger than the sum of its proper divisors (1461890).

1994542 is a wasteful number, since it uses less digits than its factorization.

1994542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363.

The product of its digits is 12960, while the sum is 34.

The square root of 1994542 is about 1412.2825496337. The cubic root of 1994542 is about 125.8773897553.

The spelling of 1994542 in words is "one million, nine hundred ninety-four thousand, five hundred forty-two".