1942089 has 4 divisors (see below), whose sum is σ = 2589456. Its totient is φ = 1294724.

The previous prime is 1942081. The next prime is 1942091. The reversal of 1942089 is 9802491.

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: 9802491 = 3 ⋅3267497.

It is a cyclic number.

It is not a de Polignac number, because 1942089 - 2³ = 1942081 is a prime.

It is a D-number.

1942089 is a lucky number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1942081) 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, 323679 + ... + 323684.

It is an arithmetic number, because the mean of its divisors is an integer number (647364).

2^1942089 is an apocalyptic number.

It is an amenable number.

1942089 is a deficient number, since it is larger than the sum of its proper divisors (647367).

1942089 is an equidigital number, since it uses as much as digits as its factorization.

1942089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647366.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1942089 is about 1393.5885332479. The cubic root of 1942089 is about 124.7641205002.

The spelling of 1942089 in words is "one million, nine hundred forty-two thousand, eighty-nine".