1020040423003 has 4 divisors (see below), whose sum is σ = 1165760483440. Its totient is φ = 874320362568.

The previous prime is 1020040422983. The next prime is 1020040423009. The reversal of 1020040423003 is 3003240400201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020040423003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020040423009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72860030208 + ... + 72860030221.

It is an arithmetic number, because the mean of its divisors is an integer number (291440120860).

Almost surely, 2^{1020040423003} is an apocalyptic number.

1020040423003 is a deficient number, since it is larger than the sum of its proper divisors (145720060437).

1020040423003 is an equidigital number, since it uses as much as digits as its factorization.

1020040423003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145720060436.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 1020040423003 its reverse (3003240400201), we get a palindrome (4023280823204).

The spelling of 1020040423003 in words is "one trillion, twenty billion, forty million, four hundred twenty-three thousand, three".