1230999142 has 8 divisors (see below), whose sum is σ = 1847278800. Its totient is φ = 615239544.

The previous prime is 1230999131. The next prime is 1230999149. The reversal of 1230999142 is 2419990321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1230999095 and 1230999104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230999149) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 124042 + ... + 133597.

It is an arithmetic number, because the mean of its divisors is an integer number (230909850).

Almost surely, 2^1230999142 is an apocalyptic number.

1230999142 is a deficient number, since it is larger than the sum of its proper divisors (616279658).

1230999142 is a wasteful number, since it uses less digits than its factorization.

1230999142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260030.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1230999142 is about 35085.5973584604. The cubic root of 1230999142 is about 1071.7313055277.

The spelling of 1230999142 in words is "one billion, two hundred thirty million, nine hundred ninety-nine thousand, one hundred forty-two".