2142940244 has 6 divisors (see below), whose sum is σ = 3750145434. Its totient is φ = 1071470120.

The previous prime is 2142940237. The next prime is 2142940259. The reversal of 2142940244 is 4420492412.

It can be written as a sum of positive squares in only one way, i.e., 1557880900 + 585059344 = 39470^2 + 24188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2142940244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267867527 + ... + 267867534.

It is an arithmetic number, because the mean of its divisors is an integer number (625024239).

Almost surely, 2^2142940244 is an apocalyptic number.

It is an amenable number.

2142940244 is a deficient number, since it is larger than the sum of its proper divisors (1607205190).

2142940244 is a wasteful number, since it uses less digits than its factorization.

2142940244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535735065 (or 535735063 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2142940244 is about 46291.9025748564. The cubic root of 2142940244 is about 1289.2486548752.

The spelling of 2142940244 in words is "two billion, one hundred forty-two million, nine hundred forty thousand, two hundred forty-four".