1147421144 has 24 divisors (see below), whose sum is σ = 2188550460. Its totient is φ = 563972976.

The previous prime is 1147421141. The next prime is 1147421147. The reversal of 1147421144 is 4411247411.

It is an interprime number because it is at equal distance from previous prime (1147421141) and next prime (1147421147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147421141) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7247 + ... + 48449.

Almost surely, 2^1147421144 is an apocalyptic number.

It is an amenable number.

1147421144 is a deficient number, since it is larger than the sum of its proper divisors (1041129316).

1147421144 is an equidigital number, since it uses as much as digits as its factorization.

1147421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41327 (or 41264 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 1147421144 is about 33873.6054177881. The cubic root of 1147421144 is about 1046.9058248757.

Adding to 1147421144 its reverse (4411247411), we get a palindrome (5558668555).

The spelling of 1147421144 in words is "one billion, one hundred forty-seven million, four hundred twenty-one thousand, one hundred forty-four".