42066324 has 48 divisors (see below), whose sum is σ = 109549440. Its totient is φ = 13959360.

The previous prime is 42066307. The next prime is 42066371. The reversal of 42066324 is 42366024.

42066324 is a `hidden beast` number, since 4 + 20 + 6 + 632 + 4 = 666.

It is a super-2 number, since 2×42066324² = 3539151229745952, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27664 + ... + 29144.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 2^42066324 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 42066324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54774720).

42066324 is an abundant number, since it is smaller than the sum of its proper divisors (67483116).

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

42066324 is a wasteful number, since it uses less digits than its factorization.

42066324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 42066324 is about 6485.8556875712. The cubic root of 42066324 is about 347.7855396820.

The spelling of 42066324 in words is "forty-two million, sixty-six thousand, three hundred twenty-four".