2134945 has 8 divisors (see below), whose sum is σ = 2712744. Its totient is φ = 1607424.

The previous prime is 2134943. The next prime is 2134949. The reversal of 2134945 is 5494312.

It can be written as a sum of positive squares in 4 ways, for example, as 516961 + 1617984 = 719^2 + 1272^2 .

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 2134945 - 2¹ = 2134943 is a prime.

It is a Duffinian number.

2134945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2134943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12474 + ... + 12643.

It is an arithmetic number, because the mean of its divisors is an integer number (339093).

2^2134945 is an apocalyptic number.

It is an amenable number.

2134945 is a deficient number, since it is larger than the sum of its proper divisors (577799).

2134945 is a wasteful number, since it uses less digits than its factorization.

2134945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25139.

The product of its digits is 4320, while the sum is 28.

The square root of 2134945 is about 1461.1450988865. The cubic root of 2134945 is about 128.7643274344.

The spelling of 2134945 in words is "two million, one hundred thirty-four thousand, nine hundred forty-five".