1242142235 has 8 divisors (see below), whose sum is σ = 1495876896. Its totient is φ = 990176320.

The previous prime is 1242142229. The next prime is 1242142241. The reversal of 1242142235 is 5322412421.

It is an interprime number because it is at equal distance from previous prime (1242142229) and next prime (1242142241).

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

It is not a de Polignac number, because 1242142235 - 2⁴ = 1242142219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440639 + ... + 443448.

It is an arithmetic number, because the mean of its divisors is an integer number (186984612).

Almost surely, 2^1242142235 is an apocalyptic number.

1242142235 is a deficient number, since it is larger than the sum of its proper divisors (253734661).

1242142235 is an equidigital number, since it uses as much as digits as its factorization.

1242142235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884373.

The product of its digits is 3840, while the sum is 26.

The square root of 1242142235 is about 35244.0382901846. The cubic root of 1242142235 is about 1074.9553931374.

Adding to 1242142235 its reverse (5322412421), we get a palindrome (6564554656).

The spelling of 1242142235 in words is "one billion, two hundred forty-two million, one hundred forty-two thousand, two hundred thirty-five".