2123015 has 8 divisors (see below), whose sum is σ = 2658528. Its totient is φ = 1624480.

The previous prime is 2122979. The next prime is 2123027. The reversal of 2123015 is 5103212.

It is a happy number.

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

It is not a de Polignac number, because 2123015 - 2¹⁴ = 2106631 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, 9116 + ... + 9345.

It is an arithmetic number, because the mean of its divisors is an integer number (332316).

2^2123015 is an apocalyptic number.

2123015 is a deficient number, since it is larger than the sum of its proper divisors (535513).

2123015 is a wasteful number, since it uses less digits than its factorization.

2123015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18489.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2123015 is about 1457.0569652556. The cubic root of 2123015 is about 128.5240357366.

Adding to 2123015 its reverse (5103212), we get a palindrome (7226227).

The spelling of 2123015 in words is "two million, one hundred twenty-three thousand, fifteen".