378042987 has 12 divisors (see below), whose sum is σ = 586352616. Its totient is φ = 216024480.

The previous prime is 378042961. The next prime is 378043009. The reversal of 378042987 is 789240873.

It is not a de Polignac number, because 378042987 - 2⁷ = 378042859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378042937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285714 + ... + 1286007.

It is an arithmetic number, because the mean of its divisors is an integer number (48862718).

Almost surely, 2^378042987 is an apocalyptic number.

378042987 is a deficient number, since it is larger than the sum of its proper divisors (208309629).

378042987 is a wasteful number, since it uses less digits than its factorization.

378042987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571738 (or 2571731 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 378042987 is about 19443.3275701460. The cubic root of 378042987 is about 723.0700868871.

The spelling of 378042987 in words is "three hundred seventy-eight million, forty-two thousand, nine hundred eighty-seven".