42263129378 has 30 divisors (see below), whose sum is σ = 67490991399. Its totient is φ = 19848991648.

The previous prime is 42263129371. The next prime is 42263129401. The reversal of 42263129378 is 87392136224.

It can be written as a sum of positive squares in 3 ways, for example, as 40684100209 + 1579029169 = 201703^2 + 39737^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145367.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42263129371) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 84021875 + ... + 84022377.

Almost surely, 2^42263129378 is an apocalyptic number.

42263129378 is a deficient number, since it is larger than the sum of its proper divisors (25227862021).

42263129378 is an frugal number, since it uses more digits than its factorization.

42263129378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 522 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The spelling of 42263129378 in words is "forty-two billion, two hundred sixty-three million, one hundred twenty-nine thousand, three hundred seventy-eight".