2126501540 has 12 divisors (see below), whose sum is σ = 4465653276. Its totient is φ = 850600608.

The previous prime is 2126501521. The next prime is 2126501551. The reversal of 2126501540 is 451056212.

It can be written as a sum of positive squares in 2 ways, for example, as 881258596 + 1245242944 = 29686^2 + 35288^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53162519 + ... + 53162558.

It is an arithmetic number, because the mean of its divisors is an integer number (372137773).

Almost surely, 2^2126501540 is an apocalyptic number.

2126501540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2126501540 is an abundant number, since it is smaller than the sum of its proper divisors (2339151736).

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

2126501540 is a wasteful number, since it uses less digits than its factorization.

2126501540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106325086 (or 106325084 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2126501540 is about 46114.0058984253. The cubic root of 2126501540 is about 1285.9435383206.

Adding to 2126501540 its reverse (451056212), we get a palindrome (2577557752).

The spelling of 2126501540 in words is "two billion, one hundred twenty-six million, five hundred one thousand, five hundred forty".