2142906639 has 8 divisors (see below), whose sum is σ = 2860229760. Its totient is φ = 1427093976.

The previous prime is 2142906631. The next prime is 2142906719. The reversal of 2142906639 is 9366092412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2142906639 - 2³ = 2142906631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142906639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142906631) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 374299 + ... + 379980.

It is an arithmetic number, because the mean of its divisors is an integer number (357528720).

Almost surely, 2^2142906639 is an apocalyptic number.

2142906639 is a deficient number, since it is larger than the sum of its proper divisors (717323121).

2142906639 is an equidigital number, since it uses as much as digits as its factorization.

2142906639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755229.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 2142906639 is about 46291.5396049861. The cubic root of 2142906639 is about 1289.2419156257.

The spelling of 2142906639 in words is "two billion, one hundred forty-two million, nine hundred six thousand, six hundred thirty-nine".