242949491 has 4 divisors (see below), whose sum is σ = 242981112. Its totient is φ = 242917872.

The previous prime is 242949481. The next prime is 242949547. The reversal of 242949491 is 194949242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242949491 is a prime.

It is a super-3 number, since 3×242949491³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242949451) 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, 3935 + ... + 22391.

It is an arithmetic number, because the mean of its divisors is an integer number (60745278).

Almost surely, 2^242949491 is an apocalyptic number.

242949491 is a deficient number, since it is larger than the sum of its proper divisors (31621).

242949491 is a wasteful number, since it uses less digits than its factorization.

242949491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31620.

The product of its digits is 186624, while the sum is 44.

The square root of 242949491 is about 15586.8371069951. The cubic root of 242949491 is about 623.9819081362.

The spelling of 242949491 in words is "two hundred forty-two million, nine hundred forty-nine thousand, four hundred ninety-one".