1000042078 has 24 divisors (see below), whose sum is σ = 1749075552. Its totient is φ = 427581504.

The previous prime is 1000042039. The next prime is 1000042091. The reversal of 1000042078 is 8702400001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30651 + ... + 54217.

It is an arithmetic number, because the mean of its divisors is an integer number (72878148).

Almost surely, 2^1000042078 is an apocalyptic number.

1000042078 is a deficient number, since it is larger than the sum of its proper divisors (749033474).

1000042078 is a wasteful number, since it uses less digits than its factorization.

1000042078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24016 (or 24009 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1000042078 is about 31623.4419062821. The cubic root of 1000042078 is about 1000.0140258033.

Adding to 1000042078 its reverse (8702400001), we get a palindrome (9702442079).

The spelling of 1000042078 in words is "one billion, forty-two thousand, seventy-eight".