2139136 has 22 divisors (see below), whose sum is σ = 4278230. Its totient is φ = 1069056.

The previous prime is 2139131. The next prime is 2139143. The reversal of 2139136 is 6319312.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 65536 = 1440^2 + 256^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2139136.

It is not an unprimeable number, because it can be changed into a prime (2139131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (194465).

2^2139136 is an apocalyptic number.

It is an amenable number.

2139136 is a deficient number, since it is larger than the sum of its proper divisors (2139094).

2139136 is an equidigital number, since it uses as much as digits as its factorization.

2139136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2091 counting only the distinct ones).

The product of its digits is 972, while the sum is 25.

The square root of 2139136 is about 1462.5785448994. The cubic root of 2139136 is about 128.8485292226.

The spelling of 2139136 in words is "two million, one hundred thirty-nine thousand, one hundred thirty-six".