1230012142 has 4 divisors (see below), whose sum is σ = 1845018216. Its totient is φ = 615006070.

The previous prime is 1230012103. The next prime is 1230012191. The reversal of 1230012142 is 2412100321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307503034 + ... + 307503037.

It is an arithmetic number, because the mean of its divisors is an integer number (461254554).

Almost surely, 2^1230012142 is an apocalyptic number.

1230012142 is a deficient number, since it is larger than the sum of its proper divisors (615006074).

1230012142 is an equidigital number, since it uses as much as digits as its factorization.

1230012142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615006073.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1230012142 is about 35071.5289373018. The cubic root of 1230012142 is about 1071.4447952726. Note that the first 3 decimals are identical.

Adding to 1230012142 its reverse (2412100321), we get a palindrome (3642112463).

It can be divided in two parts, 12300 and 12142, that added together give a palindrome (24442).

The spelling of 1230012142 in words is "one billion, two hundred thirty million, twelve thousand, one hundred forty-two".