2009742 has 32 divisors (see below), whose sum is σ = 4646400. Its totient is φ = 567648.

The previous prime is 2009737. The next prime is 2009747. The reversal of 2009742 is 2479002.

It is an interprime number because it is at equal distance from previous prime (2009737) and next prime (2009747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4359 + ... + 4797.

It is an arithmetic number, because the mean of its divisors is an integer number (145200).

2^2009742 is an apocalyptic number.

2009742 is an abundant number, since it is smaller than the sum of its proper divisors (2636658).

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

2009742 is a wasteful number, since it uses less digits than its factorization.

2009742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2009742 is about 1417.6536953713. The cubic root of 2009742 is about 126.1963429144.

The spelling of 2009742 in words is "two million, nine thousand, seven hundred forty-two".