1241556220 has 12 divisors (see below), whose sum is σ = 2607268104. Its totient is φ = 496622480.

The previous prime is 1241556209. The next prime is 1241556221. The reversal of 1241556220 is 226551421.

1241556220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241556221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31038886 + ... + 31038925.

It is an arithmetic number, because the mean of its divisors is an integer number (217272342).

Almost surely, 2^1241556220 is an apocalyptic number.

1241556220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241556220 is an abundant number, since it is smaller than the sum of its proper divisors (1365711884).

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

1241556220 is a wasteful number, since it uses less digits than its factorization.

1241556220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62077820 (or 62077818 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1241556220 is about 35235.7236338350. The cubic root of 1241556220 is about 1074.7863198872.

It can be divided in two parts, 12415 and 56220, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 1241556220 in words is "one billion, two hundred forty-one million, five hundred fifty-six thousand, two hundred twenty".