42826740 has 144 divisors (see below), whose sum is σ = 139962816. Its totient is φ = 9743360.

The previous prime is 42826733. The next prime is 42826747. The reversal of 42826740 is 4762824.

It is an interprime number because it is at equal distance from previous prime (42826733) and next prime (42826747).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42826747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123247 + ... + 123593.

It is an arithmetic number, because the mean of its divisors is an integer number (971964).

Almost surely, 2^42826740 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 42826740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69981408).

42826740 is an abundant number, since it is smaller than the sum of its proper divisors (97136076).

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

42826740 is a wasteful number, since it uses less digits than its factorization.

42826740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 42826740 is about 6544.2142385469. The cubic root of 42826740 is about 349.8686309702.

The spelling of 42826740 in words is "forty-two million, eight hundred twenty-six thousand, seven hundred forty".