1241543240 has 32 divisors (see below), whose sum is σ = 3192540480. Its totient is φ = 425671872.

The previous prime is 1241543231. The next prime is 1241543279. The reversal of 1241543240 is 423451421.

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, 2216762 + ... + 2217321.

It is an arithmetic number, because the mean of its divisors is an integer number (99766890).

Almost surely, 2^1241543240 is an apocalyptic number.

1241543240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241543240 is an abundant number, since it is smaller than the sum of its proper divisors (1950997240).

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

1241543240 is a wasteful number, since it uses less digits than its factorization.

1241543240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434101 (or 4434097 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1241543240 is about 35235.5394452817. The cubic root of 1241543240 is about 1074.7825743795.

Adding to 1241543240 its reverse (423451421), we get a palindrome (1664994661).

It can be divided in two parts, 12415 and 43240, that added together give a palindrome (55655).

The spelling of 1241543240 in words is "one billion, two hundred forty-one million, five hundred forty-three thousand, two hundred forty".