649097242 has 8 divisors (see below), whose sum is σ = 974495232. Its totient is φ = 324265500.

The previous prime is 649097231. The next prime is 649097249. The reversal of 649097242 is 242790946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (649097249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138684 + ... + 143287.

It is an arithmetic number, because the mean of its divisors is an integer number (121811904).

Almost surely, 2^649097242 is an apocalyptic number.

649097242 is a deficient number, since it is larger than the sum of its proper divisors (325397990).

649097242 is a wasteful number, since it uses less digits than its factorization.

649097242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283124.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 649097242 is about 25477.3868754235. The cubic root of 649097242 is about 865.8378917035.

The spelling of 649097242 in words is "six hundred forty-nine million, ninety-seven thousand, two hundred forty-two".