1994129 has 4 divisors (see below), whose sum is σ = 1997376. Its totient is φ = 1990884.

The previous prime is 1994119. The next prime is 1994143. The reversal of 1994129 is 9214991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9214991 = 2179 ⋅4229.

It is a cyclic number.

It is not a de Polignac number, because 1994129 - 2¹² = 1990033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389 + ... + 2034.

It is an arithmetic number, because the mean of its divisors is an integer number (499344).

2^1994129 is an apocalyptic number.

It is an amenable number.

1994129 is a deficient number, since it is larger than the sum of its proper divisors (3247).

1994129 is an equidigital number, since it uses as much as digits as its factorization.

1994129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246.

The product of its digits is 5832, while the sum is 35.

The square root of 1994129 is about 1412.1363248639. The cubic root of 1994129 is about 125.8687008850.

The spelling of 1994129 in words is "one million, nine hundred ninety-four thousand, one hundred twenty-nine".