1241998564 has 27 divisors (see below), whose sum is σ = 2214843267. Its totient is φ = 609404664.

The previous prime is 1241998523. The next prime is 1241998603. The reversal of 1241998564 is 4658991421.

The square root of 1241998564 is 35242.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 4722297 + ... + 4722559.

Almost surely, 2^1241998564 is an apocalyptic number.

1241998564 is the 35242-nd square number.

It is an amenable number.

1241998564 is a deficient number, since it is larger than the sum of its proper divisors (972844703).

1241998564 is an frugal number, since it uses more digits than its factorization.

1241998564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The cubic root of 1241998564 is about 1074.9139470327.

Multiplying 1241998564 by its sum of digits (49), we get a square (60857929636 = 246694²).

The spelling of 1241998564 in words is "one billion, two hundred forty-one million, nine hundred ninety-eight thousand, five hundred sixty-four".