100000401540 has 96 divisors (see below), whose sum is σ = 306650655360. Its totient is φ = 24198260736.

The previous prime is 100000401539. The next prime is 100000401547. The reversal of 100000401540 is 45104000001.

It is a super-2 number, since 2×100000401540² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (100000401547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1040469 + ... + 1132508.

It is an arithmetic number, because the mean of its divisors is an integer number (3194277660).

Almost surely, 2^100000401540 is an apocalyptic number.

100000401540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000401540 is an abundant number, since it is smaller than the sum of its proper divisors (206650253820).

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

100000401540 is a wasteful number, since it uses less digits than its factorization.

100000401540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173061 (or 2173059 counting only the distinct ones).

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

Adding to 100000401540 its reverse (45104000001), we get a palindrome (145104401541).

The spelling of 100000401540 in words is "one hundred billion, four hundred one thousand, five hundred forty".