298621155242 has 4 divisors (see below), whose sum is σ = 447931732866. Its totient is φ = 149310577620.

The previous prime is 298621155241. The next prime is 298621155263. The reversal of 298621155242 is 242551126892.

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., 156506480881 + 142114674361 = 395609^2 + 376981^2 .

It is not an unprimeable number, because it can be changed into a prime (298621155241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74655288809 + ... + 74655288812.

Almost surely, 2^298621155242 is an apocalyptic number.

298621155242 is a deficient number, since it is larger than the sum of its proper divisors (149310577624).

298621155242 is a wasteful number, since it uses less digits than its factorization.

298621155242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149310577623.

The product of its digits is 691200, while the sum is 47.

The spelling of 298621155242 in words is "two hundred ninety-eight billion, six hundred twenty-one million, one hundred fifty-five thousand, two hundred forty-two".