2609157242 has 4 divisors (see below), whose sum is σ = 3913735866. Its totient is φ = 1304578620.

The previous prime is 2609157223. The next prime is 2609157259. The reversal of 2609157242 is 2427519062.

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., 2300065681 + 309091561 = 47959^2 + 17581^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2609157196 and 2609157205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652289309 + ... + 652289312.

Almost surely, 2^2609157242 is an apocalyptic number.

2609157242 is a deficient number, since it is larger than the sum of its proper divisors (1304578624).

2609157242 is a wasteful number, since it uses less digits than its factorization.

2609157242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304578623.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2609157242 is about 51079.9103562252. The cubic root of 2609157242 is about 1376.6813137862.

The spelling of 2609157242 in words is "two billion, six hundred nine million, one hundred fifty-seven thousand, two hundred forty-two".