100423240 has 16 divisors (see below), whose sum is σ = 225952380. Its totient is φ = 40169280.

The previous prime is 100423231. The next prime is 100423241. The reversal of 100423240 is 42324001.

It can be written as a sum of positive squares in 2 ways, for example, as 94361796 + 6061444 = 9714^2 + 2462^2 .

It is not an unprimeable number, because it can be changed into a prime (100423241) 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, 1255251 + ... + 1255330.

Almost surely, 2^100423240 is an apocalyptic number.

100423240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100423240 is an abundant number, since it is smaller than the sum of its proper divisors (125529140).

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

100423240 is a wasteful number, since it uses less digits than its factorization.

100423240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510592 (or 2510588 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 100423240 is about 10021.1396557477. The cubic root of 100423240 is about 464.8127970384.

Adding to 100423240 its reverse (42324001), we get a palindrome (142747241).

The spelling of 100423240 in words is "one hundred million, four hundred twenty-three thousand, two hundred forty".