1019803042 has 4 divisors (see below), whose sum is σ = 1529704566. Its totient is φ = 509901520.

The previous prime is 1019802977. The next prime is 1019803061. The reversal of 1019803042 is 2403089101.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 976625001 + 43178041 = 31251^2 + 6571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1019803042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254950759 + ... + 254950762.

Almost surely, 2^1019803042 is an apocalyptic number.

1019803042 is a deficient number, since it is larger than the sum of its proper divisors (509901524).

1019803042 is an equidigital number, since it uses as much as digits as its factorization.

1019803042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509901523.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1019803042 is about 31934.3551993774. The cubic root of 1019803042 is about 1006.5579137568.

The spelling of 1019803042 in words is "one billion, nineteen million, eight hundred three thousand, forty-two".