100540947 has 32 divisors (see below), whose sum is σ = 148635648. Its totient is φ = 60068736.

The previous prime is 100540939. The next prime is 100540949. The reversal of 100540947 is 749045001.

It is a happy number.

It is not a de Polignac number, because 100540947 - 2³ = 100540939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100540949) 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, 262318 + ... + 262700.

It is an arithmetic number, because the mean of its divisors is an integer number (4644864).

Almost surely, 2^100540947 is an apocalyptic number.

100540947 is a deficient number, since it is larger than the sum of its proper divisors (48094701).

100540947 is a wasteful number, since it uses less digits than its factorization.

100540947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 100540947 is about 10027.0108706434. The cubic root of 100540947 is about 464.9943299112.

Adding to 100540947 its reverse (749045001), we get a palindrome (849585948).

The spelling of 100540947 in words is "one hundred million, five hundred forty thousand, nine hundred forty-seven".