1231420342 has 8 divisors (see below), whose sum is σ = 1847613600. Its totient is φ = 615549144.

The previous prime is 1231420331. The next prime is 1231420373. The reversal of 1231420342 is 2430241321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70717 + ... + 86392.

It is an arithmetic number, because the mean of its divisors is an integer number (230951700).

Almost surely, 2^1231420342 is an apocalyptic number.

1231420342 is a deficient number, since it is larger than the sum of its proper divisors (616193258).

1231420342 is a wasteful number, since it uses less digits than its factorization.

1231420342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161030.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1231420342 is about 35091.5993080965. The cubic root of 1231420342 is about 1071.8535265039.

Adding to 1231420342 its reverse (2430241321), we get a palindrome (3661661663).

The spelling of 1231420342 in words is "one billion, two hundred thirty-one million, four hundred twenty thousand, three hundred forty-two".