1242134201 has 32 divisors (see below), whose sum is σ = 1582288128. Its totient is φ = 947082240.

The previous prime is 1242134167. The next prime is 1242134209. The reversal of 1242134201 is 1024312421.

It is a cyclic number.

It is not a de Polignac number, because 1242134201 - 2³⁰ = 168392377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242134209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769271 + ... + 770883.

It is an arithmetic number, because the mean of its divisors is an integer number (49446504).

Almost surely, 2^1242134201 is an apocalyptic number.

1242134201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242134201 is a deficient number, since it is larger than the sum of its proper divisors (340153927).

1242134201 is a wasteful number, since it uses less digits than its factorization.

1242134201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

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

The square root of 1242134201 is about 35243.9243132770. The cubic root of 1242134201 is about 1074.9530755793.

Adding to 1242134201 its reverse (1024312421), we get a palindrome (2266446622).

The spelling of 1242134201 in words is "one billion, two hundred forty-two million, one hundred thirty-four thousand, two hundred one".