2142709556 has 24 divisors (see below), whose sum is σ = 4041369864. Its totient is φ = 988162560.

The previous prime is 2142709537. The next prime is 2142709559. The reversal of 2142709556 is 6559072412.

It can be written as a sum of positive squares in 4 ways, for example, as 404653456 + 1738056100 = 20116^2 + 41690^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142709559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53096 + ... + 84288.

It is an arithmetic number, because the mean of its divisors is an integer number (168390411).

Almost surely, 2^2142709556 is an apocalyptic number.

2142709556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2142709556 is a deficient number, since it is larger than the sum of its proper divisors (1898660308).

2142709556 is a wasteful number, since it uses less digits than its factorization.

2142709556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32531 (or 32529 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 2142709556 is about 46289.4108409256. The cubic root of 2142709556 is about 1289.2023905790.

The spelling of 2142709556 in words is "two billion, one hundred forty-two million, seven hundred nine thousand, five hundred fifty-six".