1242011243 has 8 divisors (see below), whose sum is σ = 1355313216. Its totient is φ = 1128774600.

The previous prime is 1242011233. The next prime is 1242011261. The reversal of 1242011243 is 3421102421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242011243 - 2¹⁶ = 1241945707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242011203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28880 + ... + 57602.

It is an arithmetic number, because the mean of its divisors is an integer number (169414152).

Almost surely, 2^1242011243 is an apocalyptic number.

1242011243 is a deficient number, since it is larger than the sum of its proper divisors (113301973).

1242011243 is a wasteful number, since it uses less digits than its factorization.

1242011243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32665.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1242011243 is about 35242.1798843375. The cubic root of 1242011243 is about 1074.9176047899.

Adding to 1242011243 its reverse (3421102421), we get a palindrome (4663113664).

The spelling of 1242011243 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred forty-three".