100143457 has 2 divisors, whose sum is σ = 100143458. Its totient is φ = 100143456.

The previous prime is 100143397. The next prime is 100143469. The reversal of 100143457 is 754341001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65674816 + 34468641 = 8104^2 + 5871^2 .

It is a cyclic number.

It is not a de Polignac number, because 100143457 - 2²³ = 91754849 is a prime.

It is not a weakly prime, because it can be changed into another prime (100143557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50071728 + 50071729.

It is an arithmetic number, because the mean of its divisors is an integer number (50071729).

Almost surely, 2^100143457 is an apocalyptic number.

It is an amenable number.

100143457 is a deficient number, since it is larger than the sum of its proper divisors (1).

100143457 is an equidigital number, since it uses as much as digits as its factorization.

100143457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 100143457 is about 10007.1702793547. The cubic root of 100143457 is about 464.3807334450.

Adding to 100143457 its reverse (754341001), we get a palindrome (854484458).

The spelling of 100143457 in words is "one hundred million, one hundred forty-three thousand, four hundred fifty-seven".