1005047942 has 4 divisors (see below), whose sum is σ = 1507571916. Its totient is φ = 502523970.

The previous prime is 1005047929. The next prime is 1005047963. The reversal of 1005047942 is 2497405001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1005047899 and 1005047908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251261984 + ... + 251261987.

It is an arithmetic number, because the mean of its divisors is an integer number (376892979).

Almost surely, 2^1005047942 is an apocalyptic number.

1005047942 is a deficient number, since it is larger than the sum of its proper divisors (502523974).

1005047942 is an equidigital number, since it uses as much as digits as its factorization.

1005047942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502523973.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1005047942 is about 31702.4911008583. The cubic root of 1005047942 is about 1001.6798239448.

The spelling of 1005047942 in words is "one billion, five million, forty-seven thousand, nine hundred forty-two".