2009279742 has 32 divisors (see below), whose sum is σ = 4256937504. Its totient is φ = 630067200.

The previous prime is 2009279719. The next prime is 2009279801. The reversal of 2009279742 is 2479729002.

It is a super-2 number, since 2×2009279742² = 8074410163223173128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2009279694 and 2009279703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339892 + ... + 345752.

It is an arithmetic number, because the mean of its divisors is an integer number (133029297).

Almost surely, 2^2009279742 is an apocalyptic number.

2009279742 is an abundant number, since it is smaller than the sum of its proper divisors (2247657762).

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

2009279742 is a wasteful number, since it uses less digits than its factorization.

2009279742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 2009279742 is about 44824.9901505845. The cubic root of 2009279742 is about 1261.8666675659.

The spelling of 2009279742 in words is "two billion, nine million, two hundred seventy-nine thousand, seven hundred forty-two".