2145258 has 16 divisors (see below), whose sum is σ = 4767360. Its totient is φ = 715068.

The previous prime is 2145239. The next prime is 2145263. The reversal of 2145258 is 8525412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

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, 19810 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (297960).

2^2145258 is an apocalyptic number.

2145258 is an abundant number, since it is smaller than the sum of its proper divisors (2622102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145258 is a wasteful number, since it uses less digits than its factorization.

2145258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39738 (or 39732 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 2145258 is about 1464.6699286870. The cubic root of 2145258 is about 128.9713294856.

The spelling of 2145258 in words is "two million, one hundred forty-five thousand, two hundred fifty-eight".