1242401101 has 4 divisors (see below), whose sum is σ = 1254702204. Its totient is φ = 1230100000.

The previous prime is 1242401081. The next prime is 1242401113. The reversal of 1242401101 is 1011042421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 845355625 + 397045476 = 29075^2 + 19926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242401101 - 2⁹ = 1242400589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242401201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6150400 + ... + 6150601.

It is an arithmetic number, because the mean of its divisors is an integer number (313675551).

Almost surely, 2^1242401101 is an apocalyptic number.

It is an amenable number.

1242401101 is a deficient number, since it is larger than the sum of its proper divisors (12301103).

1242401101 is a wasteful number, since it uses less digits than its factorization.

1242401101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12301102.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1242401101 is about 35247.7105781354. The cubic root of 1242401101 is about 1075.0300625449.

Adding to 1242401101 its reverse (1011042421), we get a palindrome (2253443522).

The spelling of 1242401101 in words is "one billion, two hundred forty-two million, four hundred one thousand, one hundred one".