2309642 has 4 divisors (see below), whose sum is σ = 3464466. Its totient is φ = 1154820.

The previous prime is 2309633. The next prime is 2309663. The reversal of 2309642 is 2469032.

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

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 116281 = 1481^2 + 341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577409 + ... + 577412.

2^2309642 is an apocalyptic number.

2309642 is a deficient number, since it is larger than the sum of its proper divisors (1154824).

2309642 is a wasteful number, since it uses less digits than its factorization.

2309642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154823.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2309642 is about 1519.7506374402. The cubic root of 2309642 is about 132.1848115279.

The spelling of 2309642 in words is "two million, three hundred nine thousand, six hundred forty-two".