2139524 has 12 divisors (see below), whose sum is σ = 3760848. Its totient is φ = 1065000.

The previous prime is 2139521. The next prime is 2139539. The reversal of 2139524 is 4259312.

It is a junction number, because it is equal to n+sod(n) for n = 2139493 and 2139502.

It is not an unprimeable number, because it can be changed into a prime (2139521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (313404).

2^2139524 is an apocalyptic number.

It is an amenable number.

2139524 is a deficient number, since it is larger than the sum of its proper divisors (1621324).

2139524 is a wasteful number, since it uses less digits than its factorization.

2139524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386 (or 2384 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 2139524 is about 1462.7111813342. The cubic root of 2139524 is about 128.8563190043.

The spelling of 2139524 in words is "two million, one hundred thirty-nine thousand, five hundred twenty-four".