100123457 has 8 divisors (see below), whose sum is σ = 118372800. Its totient is φ = 82860624.

The previous prime is 100123447. The next prime is 100123501. The reversal of 100123457 is 754321001.

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

It is not a de Polignac number, because 100123457 - 2¹⁸ = 99861313 is a prime.

It is the 57-th primeval number, because it sets a new record (15346) in the number of distinct primes that is it possible to write using its digits.

It is not an unprimeable number, because it can be changed into a prime (100123417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246407 + ... + 246812.

It is an arithmetic number, because the mean of its divisors is an integer number (14796600).

Almost surely, 2^100123457 is an apocalyptic number.

It is an amenable number.

100123457 is a deficient number, since it is larger than the sum of its proper divisors (18249343).

100123457 is an equidigital number, since it uses as much as digits as its factorization.

100123457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493255.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 100123457 is about 10006.1709459713. The cubic root of 100123457 is about 464.3498170200.

Adding to 100123457 its reverse (754321001), we get a palindrome (854444458).

The spelling of 100123457 in words is "one hundred million, one hundred twenty-three thousand, four hundred fifty-seven".