1566192242 has 4 divisors (see below), whose sum is σ = 2349288366. Its totient is φ = 783096120.

The previous prime is 1566192239. The next prime is 1566192259. The reversal of 1566192242 is 2422916651.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1357996201 + 208196041 = 36851^2 + 14429^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1566192196 and 1566192205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391548059 + ... + 391548062.

Almost surely, 2^1566192242 is an apocalyptic number.

1566192242 is a deficient number, since it is larger than the sum of its proper divisors (783096124).

1566192242 is an equidigital number, since it uses as much as digits as its factorization.

1566192242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783096123.

The product of its digits is 51840, while the sum is 38.

The square root of 1566192242 is about 39575.1467716798. The cubic root of 1566192242 is about 1161.3105090861.

The spelling of 1566192242 in words is "one billion, five hundred sixty-six million, one hundred ninety-two thousand, two hundred forty-two".