100742250 has 128 divisors (see below), whose sum is σ = 297123840. Its totient is φ = 22248000.

The previous prime is 100742233. The next prime is 100742251. The reversal of 100742250 is 52247001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (100742251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162441 + ... + 163059.

It is an arithmetic number, because the mean of its divisors is an integer number (2321280).

Almost surely, 2^100742250 is an apocalyptic number.

100742250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100742250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148561920).

100742250 is an abundant number, since it is smaller than the sum of its proper divisors (196381590).

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

100742250 is a wasteful number, since it uses less digits than its factorization.

100742250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 100742250 is about 10037.0438875199. The cubic root of 100742250 is about 465.3044601086.

Adding to 100742250 its reverse (52247001), we get a palindrome (152989251).

The spelling of 100742250 in words is "one hundred million, seven hundred forty-two thousand, two hundred fifty".