2129455 has 8 divisors (see below), whose sum is σ = 2666592. Its totient is φ = 1629408.

The previous prime is 2129447. The next prime is 2129473. The reversal of 2129455 is 5549212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2129455 - 2³ = 2129447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9144 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (333324).

2^2129455 is an apocalyptic number.

2129455 is a deficient number, since it is larger than the sum of its proper divisors (537137).

2129455 is a wasteful number, since it uses less digits than its factorization.

2129455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545.

The product of its digits is 3600, while the sum is 28.

The square root of 2129455 is about 1459.2652260641. The cubic root of 2129455 is about 128.6538604249.

The spelling of 2129455 in words is "two million, one hundred twenty-nine thousand, four hundred fifty-five".