1242104201 has 12 divisors (see below), whose sum is σ = 1424121372. Its totient is φ = 1079110656.

The previous prime is 1242104179. The next prime is 1242104209. The reversal of 1242104201 is 1024012421.

It can be written as a sum of positive squares in 6 ways, for example, as 200364025 + 1041740176 = 14155^2 + 32276^2 .

It is not a de Polignac number, because 1242104201 - 2⁶ = 1242104137 is a prime.

It is a super-2 number, since 2×1242104201² = 3085645692283696802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242104201.

It is not an unprimeable number, because it can be changed into a prime (1242104209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213296 + ... + 219041.

It is an arithmetic number, because the mean of its divisors is an integer number (118676781).

Almost surely, 2^1242104201 is an apocalyptic number.

It is an amenable number.

1242104201 is a deficient number, since it is larger than the sum of its proper divisors (182017171).

1242104201 is a wasteful number, since it uses less digits than its factorization.

1242104201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432380 (or 432367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1242104201 is about 35243.4987054350. The cubic root of 1242104201 is about 1074.9444214280.

Adding to 1242104201 its reverse (1024012421), we get a palindrome (2266116622).

The spelling of 1242104201 in words is "one billion, two hundred forty-two million, one hundred four thousand, two hundred one".