1151421144 has 32 divisors (see below), whose sum is σ = 2889270000. Its totient is φ = 382378112.

The previous prime is 1151421013. The next prime is 1151421199. The reversal of 1151421144 is 4411241511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82719 + ... + 95630.

Almost surely, 2^1151421144 is an apocalyptic number.

It is an amenable number.

1151421144 is an abundant number, since it is smaller than the sum of its proper divisors (1737848856).

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

1151421144 is a wasteful number, since it uses less digits than its factorization.

1151421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178627 (or 178623 counting only the distinct ones).

The product of its digits is 640, while the sum is 24.

The square root of 1151421144 is about 33932.5970712529. The cubic root of 1151421144 is about 1048.1209458729.

Adding to 1151421144 its reverse (4411241511), we get a palindrome (5562662655).

The spelling of 1151421144 in words is "one billion, one hundred fifty-one million, four hundred twenty-one thousand, one hundred forty-four".