100240477 has 2 divisors, whose sum is σ = 100240478. Its totient is φ = 100240476.

The previous prime is 100240471. The next prime is 100240499. The reversal of 100240477 is 774042001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91126116 + 9114361 = 9546^2 + 3019^2 .

It is an emirp because it is prime and its reverse (774042001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100240477 - 2²³ = 91851869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100240471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50120238 + 50120239.

It is an arithmetic number, because the mean of its divisors is an integer number (50120239).

Almost surely, 2^100240477 is an apocalyptic number.

It is an amenable number.

100240477 is a deficient number, since it is larger than the sum of its proper divisors (1).

100240477 is an equidigital number, since it uses as much as digits as its factorization.

100240477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 100240477 is about 10012.0166300301. The cubic root of 100240477 is about 464.5306506347.

Adding to 100240477 its reverse (774042001), we get a palindrome (874282478).

The spelling of 100240477 in words is "one hundred million, two hundred forty thousand, four hundred seventy-seven".