1242854244 has 36 divisors (see below), whose sum is σ = 3153362940. Its totient is φ = 412741440.

The previous prime is 1242854237. The next prime is 1242854251. The reversal of 1242854244 is 4424582421.

It is an interprime number because it is at equal distance from previous prime (1242854237) and next prime (1242854251).

It can be written as a sum of positive squares in 2 ways, for example, as 591073344 + 651780900 = 24312^2 + 25530^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1242854199 and 1242854208.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 54487 + ... + 73854.

It is an arithmetic number, because the mean of its divisors is an integer number (87593415).

Almost surely, 2^1242854244 is an apocalyptic number.

It is an amenable number.

1242854244 is an abundant number, since it is smaller than the sum of its proper divisors (1910508696).

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

1242854244 is a wasteful number, since it uses less digits than its factorization.

1242854244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128620 (or 128615 counting only the distinct ones).

The product of its digits is 81920, while the sum is 36.

The square root of 1242854244 is about 35254.1379698894. The cubic root of 1242854244 is about 1075.1607458199.

The spelling of 1242854244 in words is "one billion, two hundred forty-two million, eight hundred fifty-four thousand, two hundred forty-four".