2139247210 has 8 divisors (see below), whose sum is σ = 3850644996. Its totient is φ = 855698880.

The previous prime is 2139247199. The next prime is 2139247213. The reversal of 2139247210 is 127429312.

It can be written as a sum of positive squares in 2 ways, for example, as 1855627929 + 283619281 = 43077^2 + 16841^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2139247213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106962351 + ... + 106962370.

Almost surely, 2^2139247210 is an apocalyptic number.

2139247210 is a deficient number, since it is larger than the sum of its proper divisors (1711397786).

2139247210 is a wasteful number, since it uses less digits than its factorization.

2139247210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213924728.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2139247210 is about 46251.9968217589. The cubic root of 2139247210 is about 1288.5076205504.

The spelling of 2139247210 in words is "two billion, one hundred thirty-nine million, two hundred forty-seven thousand, two hundred ten".