1241215400 has 24 divisors (see below), whose sum is σ = 2885826270. Its totient is φ = 496486080.

The previous prime is 1241215387. The next prime is 1241215403. The reversal of 1241215400 is 45121421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 455310244 + 785905156 = 21338^2 + 28034^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1241215403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3102839 + ... + 3103238.

Almost surely, 2^1241215400 is an apocalyptic number.

1241215400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241215400 is an abundant number, since it is smaller than the sum of its proper divisors (1644610870).

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

1241215400 is a wasteful number, since it uses less digits than its factorization.

1241215400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206093 (or 6206084 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1241215400 is about 35230.8870169344. The cubic root of 1241215400 is about 1074.6879642398.

Adding to 1241215400 its reverse (45121421), we get a palindrome (1286336821).

The spelling of 1241215400 in words is "one billion, two hundred forty-one million, two hundred fifteen thousand, four hundred".