1040105040 has 80 divisors (see below), whose sum is σ = 3472361088. Its totient is φ = 256025088.

The previous prime is 1040104991. The next prime is 1040105093. The reversal of 1040105040 is 405010401.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163564 + ... + 169803.

Almost surely, 2^1040105040 is an apocalyptic number.

1040105040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040105040 is an abundant number, since it is smaller than the sum of its proper divisors (2432256048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1040105040 is a wasteful number, since it uses less digits than its factorization.

1040105040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333396 (or 333390 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1040105040 is about 32250.6595281399. The cubic root of 1040105040 is about 1013.1935123718.

Adding to 1040105040 its reverse (405010401), we get a palindrome (1445115441).

The spelling of 1040105040 in words is "one billion, forty million, one hundred five thousand, forty".