106020509 has 4 divisors (see below), whose sum is σ = 121166304. Its totient is φ = 90874716.

The previous prime is 106020493. The next prime is 106020521. The reversal of 106020509 is 905020601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106020509 - 2⁴ = 106020493 is a prime.

It is a super-2 number, since 2×106020509² = 22480696657238162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106020529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7572887 + ... + 7572900.

It is an arithmetic number, because the mean of its divisors is an integer number (30291576).

Almost surely, 2^106020509 is an apocalyptic number.

It is an amenable number.

106020509 is a deficient number, since it is larger than the sum of its proper divisors (15145795).

106020509 is an equidigital number, since it uses as much as digits as its factorization.

106020509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145794.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 106020509 is about 10296.6260979022. The cubic root of 106020509 is about 473.2928695931.

The spelling of 106020509 in words is "one hundred six million, twenty thousand, five hundred nine".