307945155242 has 4 divisors (see below), whose sum is σ = 461917732866. Its totient is φ = 153972577620.

The previous prime is 307945155149. The next prime is 307945155247. The reversal of 307945155242 is 242551549703.

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., 260088780121 + 47856375121 = 509989^2 + 218761^2 .

It is not an unprimeable number, because it can be changed into a prime (307945155247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76986288809 + ... + 76986288812.

Almost surely, 2^307945155242 is an apocalyptic number.

307945155242 is a deficient number, since it is larger than the sum of its proper divisors (153972577624).

307945155242 is a wasteful number, since it uses less digits than its factorization.

307945155242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153972577623.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 307945155242 in words is "three hundred seven billion, nine hundred forty-five million, one hundred fifty-five thousand, two hundred forty-two".