100540042 has 8 divisors (see below), whose sum is σ = 156010500. Its totient is φ = 48536544.

The previous prime is 100540031. The next prime is 100540049. The reversal of 100540042 is 240045001.

It can be written as a sum of positive squares in 2 ways, for example, as 99620361 + 919681 = 9981^2 + 959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×100540042³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100539998 and 100540025.

It is not an unprimeable number, because it can be changed into a prime (100540049) 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, 866667 + ... + 866782.

Almost surely, 2^100540042 is an apocalyptic number.

100540042 is a deficient number, since it is larger than the sum of its proper divisors (55470458).

100540042 is a wasteful number, since it uses less digits than its factorization.

100540042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733480.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 100540042 is about 10026.9657424367. The cubic root of 100540042 is about 464.9929347213.

Adding to 100540042 its reverse (240045001), we get a palindrome (340585043).

The spelling of 100540042 in words is "one hundred million, five hundred forty thousand, forty-two".