1242856088 has 8 divisors (see below), whose sum is σ = 2330355180. Its totient is φ = 621428040.

The previous prime is 1242856079. The next prime is 1242856093. The reversal of 1242856088 is 8806582421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent 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 as a sum of consecutive naturals, namely, 77678498 + ... + 77678513.

Almost surely, 2^1242856088 is an apocalyptic number.

It is an amenable number.

1242856088 is a deficient number, since it is larger than the sum of its proper divisors (1087499092).

1242856088 is a wasteful number, since it uses less digits than its factorization.

1242856088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155357017 (or 155357013 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 1242856088 is about 35254.1641228380. The cubic root of 1242856088 is about 1075.1612775517.

The spelling of 1242856088 in words is "one billion, two hundred forty-two million, eight hundred fifty-six thousand, eighty-eight".