1040020245 has 24 divisors (see below), whose sum is σ = 1966584672. Its totient is φ = 504252000.

The previous prime is 1040020213. The next prime is 1040020253. The reversal of 1040020245 is 5420200401.

1040020245 is a `hidden beast` number, since 1 + 0 + 400 + 20 + 245 = 666.

It is not a de Polignac number, because 1040020245 - 2⁵ = 1040020213 is a prime.

It is a super-2 number, since 2×1040020245² = 2163284220019720050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1050031 + ... + 1051020.

It is an arithmetic number, because the mean of its divisors is an integer number (81941028).

Almost surely, 2^1040020245 is an apocalyptic number.

1040020245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1040020245 is a deficient number, since it is larger than the sum of its proper divisors (926564427).

1040020245 is a wasteful number, since it uses less digits than its factorization.

1040020245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101073 (or 2101070 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1040020245 is about 32249.3448770669. The cubic root of 1040020245 is about 1013.1659779481.

Adding to 1040020245 its reverse (5420200401), we get a palindrome (6460220646).

The spelling of 1040020245 in words is "one billion, forty million, twenty thousand, two hundred forty-five".