100425424 has 40 divisors (see below), whose sum is σ = 213057792. Its totient is φ = 45477120.

The previous prime is 100425421. The next prime is 100425433. The reversal of 100425424 is 424524001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 100425395 and 100425404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100425421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54177 + ... + 55999.

Almost surely, 2^100425424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100425424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106528896).

100425424 is an abundant number, since it is smaller than the sum of its proper divisors (112632368).

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

100425424 is a wasteful number, since it uses less digits than its factorization.

100425424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 100425424 is about 10021.2486247972. The cubic root of 100425424 is about 464.8161665897.

Adding to 100425424 its reverse (424524001), we get a palindrome (524949425).

It can be divided in two parts, 100 and 425424, that added together give a palindrome (425524).

The spelling of 100425424 in words is "one hundred million, four hundred twenty-five thousand, four hundred twenty-four".