100140437 has 2 divisors, whose sum is σ = 100140438. Its totient is φ = 100140436.

The previous prime is 100140433. The next prime is 100140449. The reversal of 100140437 is 734041001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 320356 = 9991^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 100140437 - 2² = 100140433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100140433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50070218 + 50070219.

It is an arithmetic number, because the mean of its divisors is an integer number (50070219).

Almost surely, 2^100140437 is an apocalyptic number.

It is an amenable number.

100140437 is a deficient number, since it is larger than the sum of its proper divisors (1).

100140437 is an equidigital number, since it uses as much as digits as its factorization.

100140437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 100140437 is about 10007.0193864107. The cubic root of 100140437 is about 464.3760653287.

Adding to 100140437 its reverse (734041001), we get a palindrome (834181438).

The spelling of 100140437 in words is "one hundred million, one hundred forty thousand, four hundred thirty-seven".