242149577 has 4 divisors (see below), whose sum is σ = 242240976. Its totient is φ = 242058180.

The previous prime is 242149529. The next prime is 242149597. The reversal of 242149577 is 775941242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 775941242 = 2 ⋅387970621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242149577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242149597) 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, 41603 + ... + 47064.

It is an arithmetic number, because the mean of its divisors is an integer number (60560244).

Almost surely, 2^242149577 is an apocalyptic number.

It is an amenable number.

242149577 is a deficient number, since it is larger than the sum of its proper divisors (91399).

242149577 is an equidigital number, since it uses as much as digits as its factorization.

242149577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91398.

The product of its digits is 141120, while the sum is 41.

The square root of 242149577 is about 15561.1560303211. The cubic root of 242149577 is about 623.2963326209.

The spelling of 242149577 in words is "two hundred forty-two million, one hundred forty-nine thousand, five hundred seventy-seven".