42740424 has 96 divisors (see below), whose sum is σ = 123240000. Its totient is φ = 13343616.

The previous prime is 42740407. The next prime is 42740441. The reversal of 42740424 is 42404724.

It is an interprime number because it is at equal distance from previous prime (42740407) and next prime (42740441).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214677 + ... + 214875.

It is an arithmetic number, because the mean of its divisors is an integer number (1283750).

Almost surely, 2^42740424 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 42740424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61620000).

42740424 is an abundant number, since it is smaller than the sum of its proper divisors (80499576).

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

42740424 is a wasteful number, since it uses less digits than its factorization.

42740424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 42740424 is about 6537.6160792754. The cubic root of 42740424 is about 349.6334229976.

The spelling of 42740424 in words is "forty-two million, seven hundred forty thousand, four hundred twenty-four".