1005540432402 has 32 divisors (see below), whose sum is σ = 2264677576704. Its totient is φ = 294879891600.

The previous prime is 1005540432367. The next prime is 1005540432419. The reversal of 1005540432402 is 2042340455001.

It is a super-2 number, since 2×1005540432402² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1005540432402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245731198 + ... + 245735289.

It is an arithmetic number, because the mean of its divisors is an integer number (70771174272).

Almost surely, 2^{1005540432402} is an apocalyptic number.

1005540432402 is an abundant number, since it is smaller than the sum of its proper divisors (1259137144302).

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

1005540432402 is a wasteful number, since it uses less digits than its factorization.

1005540432402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491466534.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 1005540432402 its reverse (2042340455001), we get a palindrome (3047880887403).

The spelling of 1005540432402 in words is "one trillion, five billion, five hundred forty million, four hundred thirty-two thousand, four hundred two".