1005554140 has 24 divisors (see below), whose sum is σ = 2160774000. Its totient is φ = 392867328.

The previous prime is 1005554093. The next prime is 1005554153. The reversal of 1005554140 is 414555001.

It is a happy number.

It is a super-2 number, since 2×1005554140² = 2022278256942279200, 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 7 ways as a sum of consecutive naturals, for example, 583765 + ... + 585484.

It is an arithmetic number, because the mean of its divisors is an integer number (90032250).

Almost surely, 2^1005554140 is an apocalyptic number.

1005554140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005554140 is an abundant number, since it is smaller than the sum of its proper divisors (1155219860).

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

1005554140 is a wasteful number, since it uses less digits than its factorization.

1005554140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169301 (or 1169299 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1005554140 is about 31710.4736640751. The cubic root of 1005554140 is about 1001.8479629294.

The spelling of 1005554140 in words is "one billion, five million, five hundred fifty-four thousand, one hundred forty".