1566240122 has 4 divisors (see below), whose sum is σ = 2349360186. Its totient is φ = 783120060.

The previous prime is 1566240097. The next prime is 1566240157. The reversal of 1566240122 is 2210426651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2210426651 = 107 ⋅20658193.

It can be written as a sum of positive squares in only one way, i.e., 1565705761 + 534361 = 39569^2 + 731^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391560029 + ... + 391560032.

Almost surely, 2^1566240122 is an apocalyptic number.

1566240122 is a deficient number, since it is larger than the sum of its proper divisors (783120064).

1566240122 is an equidigital number, since it uses as much as digits as its factorization.

1566240122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783120063.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1566240122 is about 39575.7516921663. The cubic root of 1566240122 is about 1161.3223430911.

Adding to 1566240122 its reverse (2210426651), we get a palindrome (3776666773).

The spelling of 1566240122 in words is "one billion, five hundred sixty-six million, two hundred forty thousand, one hundred twenty-two".