1115205040 has 40 divisors (see below), whose sum is σ = 2595958848. Its totient is φ = 445547520.

The previous prime is 1115205037. The next prime is 1115205061. The reversal of 1115205040 is 405025111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1115204999 and 1115205017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62569 + ... + 78391.

Almost surely, 2^1115205040 is an apocalyptic number.

1115205040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115205040 is an abundant number, since it is smaller than the sum of its proper divisors (1480753808).

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

1115205040 is a wasteful number, since it uses less digits than its factorization.

1115205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16717 (or 16711 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1115205040 is about 33394.6858047804. The cubic root of 1115205040 is about 1037.0146883934.

It can be divided in two parts, 111 and 5205040, that added together give a triangular number (5205151 = T₃₂₂₆).

The spelling of 1115205040 in words is "one billion, one hundred fifteen million, two hundred five thousand, forty".