101420543 has 6 divisors (see below), whose sum is σ = 117979056. Its totient is φ = 86931852.

The previous prime is 101420507. The next prime is 101420567. The reversal of 101420543 is 345024101.

It is not a de Polignac number, because 101420543 - 2⁶ = 101420479 is a prime.

It is a super-2 number, since 2×101420543² = 20572253084829698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101420443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034855 + ... + 1034952.

It is an arithmetic number, because the mean of its divisors is an integer number (19663176).

Almost surely, 2^101420543 is an apocalyptic number.

101420543 is a deficient number, since it is larger than the sum of its proper divisors (16558513).

101420543 is an equidigital number, since it uses as much as digits as its factorization.

101420543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069821 (or 2069814 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 101420543 is about 10070.7766830568. The cubic root of 101420543 is about 466.3464163894.

Adding to 101420543 its reverse (345024101), we get a palindrome (446444644).

The spelling of 101420543 in words is "one hundred one million, four hundred twenty thousand, five hundred forty-three".