1242121435 has 8 divisors (see below), whose sum is σ = 1525209840. Its totient is φ = 970587744.

The previous prime is 1242121429. The next prime is 1242121459. The reversal of 1242121435 is 5341212421.

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

It is not a de Polignac number, because 1242121435 - 2³ = 1242121427 is a prime.

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, 2888440 + ... + 2888869.

It is an arithmetic number, because the mean of its divisors is an integer number (190651230).

Almost surely, 2^1242121435 is an apocalyptic number.

1242121435 is a deficient number, since it is larger than the sum of its proper divisors (283088405).

1242121435 is an equidigital number, since it uses as much as digits as its factorization.

1242121435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777357.

The product of its digits is 1920, while the sum is 25.

The square root of 1242121435 is about 35243.7432035815. The cubic root of 1242121435 is about 1074.9493929665.

Adding to 1242121435 its reverse (5341212421), we get a palindrome (6583333856).

It can be divided in two parts, 12421 and 21435, that added together give a square (33856 = 184²).

The spelling of 1242121435 in words is "one billion, two hundred forty-two million, one hundred twenty-one thousand, four hundred thirty-five".