2139526 has 8 divisors (see below), whose sum is σ = 3215664. Its totient is φ = 1067640.

The previous prime is 2139521. The next prime is 2139539. The reversal of 2139526 is 6259312.

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

It is a junction number, because it is equal to n+sod(n) for n = 2139494 and 2139503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139521) 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, 991 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (401958).

2^2139526 is an apocalyptic number.

2139526 is a deficient number, since it is larger than the sum of its proper divisors (1076138).

2139526 is a wasteful number, since it uses less digits than its factorization.

2139526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its digits is 3240, while the sum is 28.

The square root of 2139526 is about 1462.7118649960. The cubic root of 2139526 is about 128.8563591553.

The spelling of 2139526 in words is "two million, one hundred thirty-nine thousand, five hundred twenty-six".