978424241 has 4 divisors (see below), whose sum is σ = 978541812. Its totient is φ = 978306672.

The previous prime is 978424231. The next prime is 978424277. The reversal of 978424241 is 142424879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142424879 = 59 ⋅2413981.

It can be written as a sum of positive squares in 2 ways, for example, as 444999025 + 533425216 = 21095^2 + 23096^2 .

It is a cyclic number.

It is not a de Polignac number, because 978424241 - 2¹⁰ = 978423217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978424231) 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, 45266 + ... + 63291.

It is an arithmetic number, because the mean of its divisors is an integer number (244635453).

Almost surely, 2^978424241 is an apocalyptic number.

It is an amenable number.

978424241 is a deficient number, since it is larger than the sum of its proper divisors (117571).

978424241 is a wasteful number, since it uses less digits than its factorization.

978424241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117570.

The product of its digits is 129024, while the sum is 41.

The square root of 978424241 is about 31279.7736724549. The cubic root of 978424241 is about 992.7557275756.

The spelling of 978424241 in words is "nine hundred seventy-eight million, four hundred twenty-four thousand, two hundred forty-one".