2142020520 has 48 divisors (see below), whose sum is σ = 6961567860. Its totient is φ = 571205376.

The previous prime is 2142020483. The next prime is 2142020527. The reversal of 2142020520 is 250202412.

2142020520 is a `hidden beast` number, since 2 + 142 + 0 + 2 + 0 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2141653284 + 367236 = 46278^2 + 606^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2142020493 and 2142020502.

It is not an unprimeable number, because it can be changed into a prime (2142020527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2974669 + ... + 2975388.

Almost surely, 2^2142020520 is an apocalyptic number.

2142020520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142020520 is an abundant number, since it is smaller than the sum of its proper divisors (4819547340).

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

2142020520 is a wasteful number, since it uses less digits than its factorization.

2142020520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950074 (or 5950067 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2142020520 is about 46281.9675467671. The cubic root of 2142020520 is about 1289.0641851791.

Adding to 2142020520 its reverse (250202412), we get a palindrome (2392222932).

The spelling of 2142020520 in words is "two billion, one hundred forty-two million, twenty thousand, five hundred twenty".