1242124201 has 6 divisors (see below), whose sum is σ = 1286433902. Its totient is φ = 1199291520.

The previous prime is 1242124157. The next prime is 1242124217. The reversal of 1242124201 is 1024212421.

It can be written as a sum of positive squares in 3 ways, for example, as 281434176 + 960690025 = 16776^2 + 30995^2 .

It is not a de Polignac number, because 1242124201 - 2¹³ = 1242116009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242124501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737640 + ... + 739321.

Almost surely, 2^1242124201 is an apocalyptic number.

It is an amenable number.

1242124201 is a deficient number, since it is larger than the sum of its proper divisors (44309701).

1242124201 is an equidigital number, since it uses as much as digits as its factorization.

1242124201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477019 (or 1476990 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1242124201 is about 35243.7824445674. The cubic root of 1242124201 is about 1074.9501908777.

Adding to 1242124201 its reverse (1024212421), we get a palindrome (2266336622).

It can be divided in two parts, 124212420 and 1, that added together give a palindrome (124212421).

The spelling of 1242124201 in words is "one billion, two hundred forty-two million, one hundred twenty-four thousand, two hundred one".