1144521242 has 4 divisors (see below), whose sum is σ = 1716781866. Its totient is φ = 572260620.

The previous prime is 1144521233. The next prime is 1144521247. The reversal of 1144521242 is 2421254411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421254411 = 31 ⋅78104981.

It can be written as a sum of positive squares in only one way, i.e., 1013212561 + 131308681 = 31831^2 + 11459^2 .

It is not an unprimeable number, because it can be changed into a prime (1144521247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286130309 + ... + 286130312.

Almost surely, 2^1144521242 is an apocalyptic number.

1144521242 is a deficient number, since it is larger than the sum of its proper divisors (572260624).

1144521242 is an equidigital number, since it uses as much as digits as its factorization.

1144521242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572260623.

The product of its digits is 2560, while the sum is 26.

The square root of 1144521242 is about 33830.7735944657. The cubic root of 1144521242 is about 1046.0231250074.

Adding to 1144521242 its reverse (2421254411), we get a palindrome (3565775653).

The spelling of 1144521242 in words is "one billion, one hundred forty-four million, five hundred twenty-one thousand, two hundred forty-two".