242561001 has 4 divisors (see below), whose sum is σ = 323414672. Its totient is φ = 161707332.

The previous prime is 242560993. The next prime is 242561009. The reversal of 242561001 is 100165242.

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.

It is an interprime number because it is at equal distance from previous prime (242560993) and next prime (242561009).

It is not a de Polignac number, because 242561001 - 2³ = 242560993 is a prime.

It is a super-2 number, since 2×242561001² = 117671678412244002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242561009) 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, 40426831 + ... + 40426836.

It is an arithmetic number, because the mean of its divisors is an integer number (80853668).

Almost surely, 2^242561001 is an apocalyptic number.

It is an amenable number.

242561001 is a deficient number, since it is larger than the sum of its proper divisors (80853671).

242561001 is an equidigital number, since it uses as much as digits as its factorization.

242561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80853670.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 242561001 is about 15574.3700033099. The cubic root of 242561001 is about 623.6491365590.

The spelling of 242561001 in words is "two hundred forty-two million, five hundred sixty-one thousand, one".