42418428 has 48 divisors (see below), whose sum is σ = 109485600. Its totient is φ = 12697344.

The previous prime is 42418427. The next prime is 42418429. The reversal of 42418428 is 82481424.

It is an interprime number because it is at equal distance from previous prime (42418427) and next prime (42418429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42418421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098 + ... + 9446.

It is an arithmetic number, because the mean of its divisors is an integer number (2280950).

Almost surely, 2^42418428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42418428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54742800).

42418428 is an abundant number, since it is smaller than the sum of its proper divisors (67067172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42418428 is a wasteful number, since it uses less digits than its factorization.

42418428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406 (or 7404 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 42418428 is about 6512.9431135240. The cubic root of 42418428 is about 348.7531909627.

The spelling of 42418428 in words is "forty-two million, four hundred eighteen thousand, four hundred twenty-eight".