1241209564 has 48 divisors (see below), whose sum is σ = 2553255936. Its totient is φ = 516873600.

The previous prime is 1241209553. The next prime is 1241209573. The reversal of 1241209564 is 4659021421.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299869 + ... + 303979.

It is an arithmetic number, because the mean of its divisors is an integer number (53192832).

Almost surely, 2^1241209564 is an apocalyptic number.

1241209564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1241209564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276627968).

1241209564 is an abundant number, since it is smaller than the sum of its proper divisors (1312046372).

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

1241209564 is a wasteful number, since it uses less digits than its factorization.

1241209564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426 (or 4424 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1241209564 is about 35230.8041917865. The cubic root of 1241209564 is about 1074.6862798992.

The spelling of 1241209564 in words is "one billion, two hundred forty-one million, two hundred nine thousand, five hundred sixty-four".