2139734 has 4 divisors (see below), whose sum is σ = 3209604. Its totient is φ = 1069866.

The previous prime is 2139733. The next prime is 2139737. The reversal of 2139734 is 4379312.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2139697 and 2139706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534932 + ... + 534935.

It is an arithmetic number, because the mean of its divisors is an integer number (802401).

2^2139734 is an apocalyptic number.

2139734 is a deficient number, since it is larger than the sum of its proper divisors (1069870).

2139734 is a wasteful number, since it uses less digits than its factorization.

2139734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069869.

The product of its digits is 4536, while the sum is 29.

The square root of 2139734 is about 1462.7829640791. The cubic root of 2139734 is about 128.8605347304.

The spelling of 2139734 in words is "two million, one hundred thirty-nine thousand, seven hundred thirty-four".