1005356140 has 12 divisors (see below), whose sum is σ = 2111247936. Its totient is φ = 402142448.

The previous prime is 1005356123. The next prime is 1005356147. The reversal of 1005356140 is 416535001.

It is not an unprimeable number, because it can be changed into a prime (1005356147) 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, 25133884 + ... + 25133923.

It is an arithmetic number, because the mean of its divisors is an integer number (175937328).

Almost surely, 2^1005356140 is an apocalyptic number.

1005356140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005356140 is an abundant number, since it is smaller than the sum of its proper divisors (1105891796).

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

1005356140 is a wasteful number, since it uses less digits than its factorization.

1005356140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50267816 (or 50267814 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1005356140 is about 31707.3515134897. The cubic root of 1005356140 is about 1001.7822018696.

The spelling of 1005356140 in words is "one billion, five million, three hundred fifty-six thousand, one hundred forty".