42524730 has 64 divisors (see below), whose sum is σ = 117331200. Its totient is φ = 10946880.

The previous prime is 42524693. The next prime is 42524743. The reversal of 42524730 is 3742524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42524694 and 42524703.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5115 + ... + 10545.

It is an arithmetic number, because the mean of its divisors is an integer number (1833300).

Almost surely, 2^42524730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42524730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58665600).

42524730 is an abundant number, since it is smaller than the sum of its proper divisors (74806470).

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

42524730 is a wasteful number, since it uses less digits than its factorization.

42524730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42524730 is about 6521.0988337856. The cubic root of 42524730 is about 349.0442769964.

The spelling of 42524730 in words is "forty-two million, five hundred twenty-four thousand, seven hundred thirty".