1242230890 has 16 divisors (see below), whose sum is σ = 2238563808. Its totient is φ = 496326096.

The previous prime is 1242230867. The next prime is 1242230893. The reversal of 1242230890 is 980322421.

It is not an unprimeable number, because it can be changed into a prime (1242230893) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61512 + ... + 79171.

It is an arithmetic number, because the mean of its divisors is an integer number (139910238).

Almost surely, 2^1242230890 is an apocalyptic number.

1242230890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242230890 is a deficient number, since it is larger than the sum of its proper divisors (996332918).

1242230890 is a wasteful number, since it uses less digits than its factorization.

1242230890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141573.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1242230890 is about 35245.2959981896. The cubic root of 1242230890 is about 1074.9809666722.

The spelling of 1242230890 in words is "one billion, two hundred forty-two million, two hundred thirty thousand, eight hundred ninety".