1242289120 has 48 divisors (see below), whose sum is σ = 2937504528. Its totient is φ = 496476160.

The previous prime is 1242289099. The next prime is 1242289121. The reversal of 1242289120 is 219822421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242289121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225600 + ... + 231040.

It is an arithmetic number, because the mean of its divisors is an integer number (61198011).

Almost surely, 2^1242289120 is an apocalyptic number.

1242289120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242289120 is an abundant number, since it is smaller than the sum of its proper divisors (1695215408).

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

1242289120 is a wasteful number, since it uses less digits than its factorization.

1242289120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883 (or 6875 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1242289120 is about 35246.1220561922. The cubic root of 1242289120 is about 1074.9977631105.

The spelling of 1242289120 in words is "one billion, two hundred forty-two million, two hundred eighty-nine thousand, one hundred twenty".