101421043 has 2 divisors, whose sum is σ = 101421044. Its totient is φ = 101421042.

The previous prime is 101421029. The next prime is 101421083. The reversal of 101421043 is 340124101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101421043 - 2²¹ = 99323891 is a prime.

It is not a weakly prime, because it can be changed into another prime (101421083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50710521 + 50710522.

It is an arithmetic number, because the mean of its divisors is an integer number (50710522).

Almost surely, 2^101421043 is an apocalyptic number.

101421043 is a deficient number, since it is larger than the sum of its proper divisors (1).

101421043 is an equidigital number, since it uses as much as digits as its factorization.

101421043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 101421043 is about 10070.8015073280. The cubic root of 101421043 is about 466.3471827458.

Adding to 101421043 its reverse (340124101), we get a palindrome (441545144).

The spelling of 101421043 in words is "one hundred one million, four hundred twenty-one thousand, forty-three".