100400245 has 8 divisors (see below), whose sum is σ = 131433120. Its totient is φ = 73018320.

The previous prime is 100400207. The next prime is 100400257. The reversal of 100400245 is 542004001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100400245 - 2¹⁹ = 99875957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912675 + ... + 912784.

It is an arithmetic number, because the mean of its divisors is an integer number (16429140).

Almost surely, 2^100400245 is an apocalyptic number.

It is an amenable number.

100400245 is a deficient number, since it is larger than the sum of its proper divisors (31032875).

100400245 is a wasteful number, since it uses less digits than its factorization.

100400245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825475.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 100400245 is about 10019.9922654661. The cubic root of 100400245 is about 464.7773165852. Note that the first 3 decimals are identical.

Adding to 100400245 its reverse (542004001), we get a palindrome (642404246).

The spelling of 100400245 in words is "one hundred million, four hundred thousand, two hundred forty-five".