4912078642 has 16 divisors (see below), whose sum is σ = 7517811672. Its totient is φ = 2406643200.

The previous prime is 4912078631. The next prime is 4912078643. The reversal of 4912078642 is 2468702194.

It can be written as a sum of positive squares in 4 ways, for example, as 4831779121 + 80299521 = 69511^2 + 8961^2 .

It is not an unprimeable number, because it can be changed into a prime (4912078643) 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, 105753 + ... + 144940.

Almost surely, 2^4912078642 is an apocalyptic number.

4912078642 is a deficient number, since it is larger than the sum of its proper divisors (2605733030).

4912078642 is a wasteful number, since it uses less digits than its factorization.

4912078642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250893.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 4912078642 is about 70086.2229114967. Note that the first 3 decimals coincide. The cubic root of 4912078642 is about 1699.8937236907.

It can be divided in two parts, 491207 and 8642, that added together give a square (499849 = 707²).

The spelling of 4912078642 in words is "four billion, nine hundred twelve million, seventy-eight thousand, six hundred forty-two".