1230500042 has 4 divisors (see below), whose sum is σ = 1845750066. Its totient is φ = 615250020.

The previous prime is 1230500039. The next prime is 1230500093. The reversal of 1230500042 is 2400050321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2400050321 = 59 ⋅40678819.

It can be written as a sum of positive squares in only one way, i.e., 1229133481 + 1366561 = 35059^2 + 1169^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307625009 + ... + 307625012.

Almost surely, 2^1230500042 is an apocalyptic number.

1230500042 is a deficient number, since it is larger than the sum of its proper divisors (615250024).

1230500042 is an equidigital number, since it uses as much as digits as its factorization.

1230500042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615250023.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1230500042 is about 35078.4840322383. The cubic root of 1230500042 is about 1071.5864439587.

Adding to 1230500042 its reverse (2400050321), we get a palindrome (3630550363).

The spelling of 1230500042 in words is "one billion, two hundred thirty million, five hundred thousand, forty-two".