100542340 has 12 divisors (see below), whose sum is σ = 211138956. Its totient is φ = 40216928.

The previous prime is 100542307. The next prime is 100542341. The reversal of 100542340 is 43245001.

It can be written as a sum of positive squares in 2 ways, for example, as 41190724 + 59351616 = 6418^2 + 7704^2 .

It is not an unprimeable number, because it can be changed into a prime (100542341) 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, 2513539 + ... + 2513578.

It is an arithmetic number, because the mean of its divisors is an integer number (17594913).

Almost surely, 2^100542340 is an apocalyptic number.

100542340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100542340 is an abundant number, since it is smaller than the sum of its proper divisors (110596616).

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

100542340 is a wasteful number, since it uses less digits than its factorization.

100542340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027126 (or 5027124 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 100542340 is about 10027.0803327788. The cubic root of 100542340 is about 464.9964774081.

Adding to 100542340 its reverse (43245001), we get a palindrome (143787341).

The spelling of 100542340 in words is "one hundred million, five hundred forty-two thousand, three hundred forty".