2139750 has 64 divisors (see below), whose sum is σ = 5952960. Its totient is φ = 568800.

The previous prime is 2139743. The next prime is 2139757. The reversal of 2139750 is 579312.

It is an interprime number because it is at equal distance from previous prime (2139743) and next prime (2139757).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6592 + ... + 6908.

It is an arithmetic number, because the mean of its divisors is an integer number (93015).

2^2139750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2976480).

2139750 is an abundant number, since it is smaller than the sum of its proper divisors (3813210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139750 is a wasteful number, since it uses less digits than its factorization.

2139750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2139750 is about 1462.7884330962. The cubic root of 2139750 is about 128.8608559173.

The spelling of 2139750 in words is "two million, one hundred thirty-nine thousand, seven hundred fifty".