1078398442 has 8 divisors (see below), whose sum is σ = 1764652032. Its totient is φ = 490181100.

The previous prime is 1078398421. The next prime is 1078398463. The reversal of 1078398442 is 2448938701.

It is an interprime number because it is at equal distance from previous prime (1078398421) and next prime (1078398463).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1078398392 and 1078398401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24509034 + ... + 24509077.

It is an arithmetic number, because the mean of its divisors is an integer number (220581504).

Almost surely, 2^1078398442 is an apocalyptic number.

1078398442 is a deficient number, since it is larger than the sum of its proper divisors (686253590).

1078398442 is a wasteful number, since it uses less digits than its factorization.

1078398442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49018124.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1078398442 is about 32838.9774810362. The cubic root of 1078398442 is about 1025.4781642101.

It can be divided in two parts, 107839 and 8442, that added together give a square (116281 = 341²).

The spelling of 1078398442 in words is "one billion, seventy-eight million, three hundred ninety-eight thousand, four hundred forty-two".