1101242420 has 24 divisors (see below), whose sum is σ = 2321833248. Its totient is φ = 438740000.

The previous prime is 1101242381. The next prime is 1101242437. The reversal of 1101242420 is 242421011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104666 + ... + 114705.

It is an arithmetic number, because the mean of its divisors is an integer number (96743052).

Almost surely, 2^1101242420 is an apocalyptic number.

1101242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101242420 is an abundant number, since it is smaller than the sum of its proper divisors (1220590828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101242420 is a wasteful number, since it uses less digits than its factorization.

1101242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219631 (or 219629 counting only the distinct ones).

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

The square root of 1101242420 is about 33184.9728039666. The cubic root of 1101242420 is about 1032.6686133063.

Adding to 1101242420 its reverse (242421011), we get a palindrome (1343663431).

The spelling of 1101242420 in words is "one billion, one hundred one million, two hundred forty-two thousand, four hundred twenty".