42072430 has 8 divisors (see below), whose sum is σ = 75730392. Its totient is φ = 16828968.

The previous prime is 42072421. The next prime is 42072431. The reversal of 42072430 is 3427024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×42072430³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42072431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103612 + ... + 2103631.

It is an arithmetic number, because the mean of its divisors is an integer number (9466299).

Almost surely, 2^42072430 is an apocalyptic number.

42072430 is a deficient number, since it is larger than the sum of its proper divisors (33657962).

42072430 is a wasteful number, since it uses less digits than its factorization.

42072430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207250.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42072430 is about 6486.3263871008. The cubic root of 42072430 is about 347.8023660929.

Adding to 42072430 its reverse (3427024), we get a palindrome (45499454).

The spelling of 42072430 in words is "forty-two million, seventy-two thousand, four hundred thirty".