141428109 has 4 divisors (see below), whose sum is σ = 188570816. Its totient is φ = 94285404.

The previous prime is 141428101. The next prime is 141428113. The reversal of 141428109 is 901824141.

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 not a de Polignac number, because 141428109 - 2³ = 141428101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141428101) 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, 23571349 + ... + 23571354.

It is an arithmetic number, because the mean of its divisors is an integer number (47142704).

Almost surely, 2^141428109 is an apocalyptic number.

It is an amenable number.

141428109 is a deficient number, since it is larger than the sum of its proper divisors (47142707).

141428109 is an equidigital number, since it uses as much as digits as its factorization.

141428109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47142706.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 141428109 is about 11892.3550653350. The cubic root of 141428109 is about 521.0090232902.

The spelling of 141428109 in words is "one hundred forty-one million, four hundred twenty-eight thousand, one hundred nine".