100242554 has 4 divisors (see below), whose sum is σ = 150363834. Its totient is φ = 50121276.

The previous prime is 100242539. The next prime is 100242559. The reversal of 100242554 is 455242001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82391929 + 17850625 = 9077^2 + 4225^2 .

It is not an unprimeable number, because it can be changed into a prime (100242559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25060637 + ... + 25060640.

Almost surely, 2^100242554 is an apocalyptic number.

100242554 is a deficient number, since it is larger than the sum of its proper divisors (50121280).

100242554 is an equidigital number, since it uses as much as digits as its factorization.

100242554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50121279.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 100242554 is about 10012.1203548499. The cubic root of 100242554 is about 464.5338589977.

Adding to 100242554 its reverse (455242001), we get a palindrome (555484555).

The spelling of 100242554 in words is "one hundred million, two hundred forty-two thousand, five hundred fifty-four".