2120715 has 32 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 1080288.

The previous prime is 2120693. The next prime is 2120731. The reversal of 2120715 is 5170212.

It is not a de Polignac number, because 2120715 - 2⁹ = 2120203 is a prime.

It is a super-2 number, since 2×2120715² = 8994864222450, which contains 22 as substring.

2120715 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2764 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^2120715 is an apocalyptic number.

2120715 is a deficient number, since it is larger than the sum of its proper divisors (1819125).

2120715 is a wasteful number, since it uses less digits than its factorization.

2120715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 2120715 is about 1456.2674891654. The cubic root of 2120715 is about 128.4776061548.

Adding to 2120715 its reverse (5170212), we get a palindrome (7290927).

It can be divided in two parts, 21 and 20715, that added together give a 4-th power (20736 = 12⁴).

The spelling of 2120715 in words is "two million, one hundred twenty thousand, seven hundred fifteen".