1020440024019 has 72 divisors (see below), whose sum is σ = 1603247115600. Its totient is φ = 625147600896.

The previous prime is 1020440023987. The next prime is 1020440024029. The reversal of 1020440024019 is 9104200440201.

It is a happy number.

1020440024019 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 4 + 400 + 240 + 19 = 666.

It is not a de Polignac number, because 1020440024019 - 2⁵ = 1020440023987 is a prime.

It is a super-2 number, since 2×1020440024019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020440023983 and 1020440024001.

It is not an unprimeable number, because it can be changed into a prime (1020440024029) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 357170439 + ... + 357173295.

It is an arithmetic number, because the mean of its divisors is an integer number (22267321050).

Almost surely, 2^{1020440024019} is an apocalyptic number.

1020440024019 is a deficient number, since it is larger than the sum of its proper divisors (582807091581).

1020440024019 is a wasteful number, since it uses less digits than its factorization.

1020440024019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861 (or 3845 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 1020440024019 in words is "one trillion, twenty billion, four hundred forty million, twenty-four thousand, nineteen".