1242886878 has 48 divisors (see below), whose sum is σ = 2763961200. Its totient is φ = 403425792.

The previous prime is 1242886873. The next prime is 1242886907. The reversal of 1242886878 is 8786882421.

1242886878 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242886871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270948 + ... + 275496.

It is an arithmetic number, because the mean of its divisors is an integer number (57582525).

Almost surely, 2^1242886878 is an apocalyptic number.

1242886878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1242886878 is an abundant number, since it is smaller than the sum of its proper divisors (1521074322).

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

1242886878 is a wasteful number, since it uses less digits than its factorization.

1242886878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953 (or 4950 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The square root of 1242886878 is about 35254.6008061359. The cubic root of 1242886878 is about 1075.1701560112.

The spelling of 1242886878 in words is "one billion, two hundred forty-two million, eight hundred eighty-six thousand, eight hundred seventy-eight".