1242095688 has 32 divisors (see below), whose sum is σ = 3450266400. Its totient is φ = 414031824.

The previous prime is 1242095669. The next prime is 1242095689. The reversal of 1242095688 is 8865902421.

It is not an unprimeable number, because it can be changed into a prime (1242095689) 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, 2875006 + ... + 2875437.

It is an arithmetic number, because the mean of its divisors is an integer number (107820825).

Almost surely, 2^1242095688 is an apocalyptic number.

1242095688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1242095688 is an abundant number, since it is smaller than the sum of its proper divisors (2208170712).

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

1242095688 is a wasteful number, since it uses less digits than its factorization.

1242095688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750458 (or 5750448 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1242095688 is about 35243.3779311802. The cubic root of 1242095688 is about 1074.9419656430.

The spelling of 1242095688 in words is "one billion, two hundred forty-two million, ninety-five thousand, six hundred eighty-eight".