242913505 has 4 divisors (see below), whose sum is σ = 291496212. Its totient is φ = 194330800.

The previous prime is 242913487. The next prime is 242913523. The reversal of 242913505 is 505319242.

242913505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (242913487) and next prime (242913523).

It can be written as a sum of positive squares in 2 ways, for example, as 29724304 + 213189201 = 5452^2 + 14601^2 .

It is not a de Polignac number, because 242913505 - 2²⁷ = 108695777 is a prime.

It is a super-2 number, since 2×242913505² = 118013941822770050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24291346 + ... + 24291355.

It is an arithmetic number, because the mean of its divisors is an integer number (72874053).

Almost surely, 2^242913505 is an apocalyptic number.

It is an amenable number.

242913505 is a deficient number, since it is larger than the sum of its proper divisors (48582707).

242913505 is an equidigital number, since it uses as much as digits as its factorization.

242913505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48582706.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 242913505 is about 15585.6826927793. The cubic root of 242913505 is about 623.9510982730.

The spelling of 242913505 in words is "two hundred forty-two million, nine hundred thirteen thousand, five hundred five".