1942286217 has 4 divisors (see below), whose sum is σ = 2589714960. Its totient is φ = 1294857476.

The previous prime is 1942286201. The next prime is 1942286231. The reversal of 1942286217 is 7126822491.

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: 7126822491 = 3 ⋅2375607497.

It is a cyclic number.

It is not a de Polignac number, because 1942286217 - 2⁴ = 1942286201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1942286287) 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, 323714367 + ... + 323714372.

It is an arithmetic number, because the mean of its divisors is an integer number (647428740).

Almost surely, 2^1942286217 is an apocalyptic number.

It is an amenable number.

1942286217 is a deficient number, since it is larger than the sum of its proper divisors (647428743).

1942286217 is an equidigital number, since it uses as much as digits as its factorization.

1942286217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647428742.

The product of its digits is 96768, while the sum is 42.

The square root of 1942286217 is about 44071.3763910319. The cubic root of 1942286217 is about 1247.6834357696.

The spelling of 1942286217 in words is "one billion, nine hundred forty-two million, two hundred eighty-six thousand, two hundred seventeen".