106509142 has 4 divisors (see below), whose sum is σ = 159763716. Its totient is φ = 53254570.

The previous prime is 106509133. The next prime is 106509181. The reversal of 106509142 is 241905601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×106509142² = 22688394659152328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106509142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26627284 + ... + 26627287.

It is an arithmetic number, because the mean of its divisors is an integer number (39940929).

Almost surely, 2^106509142 is an apocalyptic number.

106509142 is a deficient number, since it is larger than the sum of its proper divisors (53254574).

106509142 is an equidigital number, since it uses as much as digits as its factorization.

106509142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53254573.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 106509142 is about 10320.3266421175. The cubic root of 106509142 is about 474.0188679013.

The spelling of 106509142 in words is "one hundred six million, five hundred nine thousand, one hundred forty-two".