100542140 has 12 divisors (see below), whose sum is σ = 211138536. Its totient is φ = 40216848.

The previous prime is 100542137. The next prime is 100542151. The reversal of 100542140 is 41245001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513534 + ... + 2513573.

It is an arithmetic number, because the mean of its divisors is an integer number (17594878).

Almost surely, 2^100542140 is an apocalyptic number.

100542140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100542140 is an abundant number, since it is smaller than the sum of its proper divisors (110596396).

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

100542140 is a wasteful number, since it uses less digits than its factorization.

100542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027116 (or 5027114 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 100542140 is about 10027.0703597811. The cubic root of 100542140 is about 464.9961690824.

Adding to 100542140 its reverse (41245001), we get a palindrome (141787141).

The spelling of 100542140 in words is "one hundred million, five hundred forty-two thousand, one hundred forty".