9942425 has 6 divisors (see below), whose sum is σ = 12328638. Its totient is φ = 7953920.

The previous prime is 9942421. The next prime is 9942437. The reversal of 9942425 is 5242499.

It can be written as a sum of positive squares in 3 ways, for example, as 126736 + 9815689 = 356^2 + 3133^2 .

It is not a de Polignac number, because 9942425 - 2² = 9942421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9942421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198824 + ... + 198873.

It is an arithmetic number, because the mean of its divisors is an integer number (2054773).

Almost surely, 2^9942425 is an apocalyptic number.

It is an amenable number.

9942425 is a deficient number, since it is larger than the sum of its proper divisors (2386213).

9942425 is a wasteful number, since it uses less digits than its factorization.

9942425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397707 (or 397702 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 9942425 is about 3153.1611122808. The cubic root of 9942425 is about 215.0292010094.

It can be divided in two parts, 99 and 42425, that added together give a palindrome (42524).

The spelling of 9942425 in words is "nine million, nine hundred forty-two thousand, four hundred twenty-five".