1151421300 has 54 divisors (see below), whose sum is σ = 3609068918. Its totient is φ = 307045440.

The previous prime is 1151421283. The next prime is 1151421301. The reversal of 1151421300 is 31241511.

It can be written as a sum of positive squares in 3 ways, for example, as 400880484 + 750540816 = 20022^2 + 27396^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151421301) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 638779 + ... + 640578.

Almost surely, 2^1151421300 is an apocalyptic number.

1151421300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151421300 is an abundant number, since it is smaller than the sum of its proper divisors (2457647618).

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

1151421300 is a wasteful number, since it uses less digits than its factorization.

1151421300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279377 (or 1279367 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1151421300 is about 33932.5993699274. The cubic root of 1151421300 is about 1048.1209932077.

Adding to 1151421300 its reverse (31241511), we get a palindrome (1182662811).

The spelling of 1151421300 in words is "one billion, one hundred fifty-one million, four hundred twenty-one thousand, three hundred".