42929378 has 18 divisors (see below), whose sum is σ = 66592227. Its totient is φ = 20755840.

The previous prime is 42929357. The next prime is 42929407. The reversal of 42929378 is 87392924.

42929378 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 5 ways, for example, as 7491169 + 35438209 = 2737^2 + 5953^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4633.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 379850 + ... + 379962.

Almost surely, 2^42929378 is an apocalyptic number.

42929378 is a deficient number, since it is larger than the sum of its proper divisors (23662849).

42929378 is an equidigital number, since it uses as much as digits as its factorization.

42929378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 156 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 42929378 is about 6552.0514344745. The cubic root of 42929378 is about 350.1479048357.

The spelling of 42929378 in words is "forty-two million, nine hundred twenty-nine thousand, three hundred seventy-eight".