1242011235 has 16 divisors (see below), whose sum is σ = 1988491680. Its totient is φ = 661981440.

The previous prime is 1242011233. The next prime is 1242011261. The reversal of 1242011235 is 5321102421.

It is not a de Polignac number, because 1242011235 - 2¹ = 1242011233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242011233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596 + ... + 49865.

It is an arithmetic number, because the mean of its divisors is an integer number (124280730).

Almost surely, 2^1242011235 is an apocalyptic number.

1242011235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242011235 is a deficient number, since it is larger than the sum of its proper divisors (746480445).

1242011235 is a wasteful number, since it uses less digits than its factorization.

1242011235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53078.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1242011235 is about 35242.1797708371. The cubic root of 1242011235 is about 1074.9176024820.

Adding to 1242011235 its reverse (5321102421), we get a palindrome (6563113656).

The spelling of 1242011235 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred thirty-five".