2129742 has 24 divisors (see below), whose sum is σ = 4647240. Its totient is φ = 704880.

The previous prime is 2129741. The next prime is 2129749. The reversal of 2129742 is 2479212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2892 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (193635).

2^2129742 is an apocalyptic number.

2129742 is an abundant number, since it is smaller than the sum of its proper divisors (2517498).

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

2129742 is a wasteful number, since it uses less digits than its factorization.

2129742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 845 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2129742 is about 1459.3635599123. The cubic root of 2129742 is about 128.6596399944.

The spelling of 2129742 in words is "two million, one hundred twenty-nine thousand, seven hundred forty-two".