42072830 has 8 divisors (see below), whose sum is σ = 75731112. Its totient is φ = 16829128.

The previous prime is 42072829. The next prime is 42072853. The reversal of 42072830 is 3827024.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42072830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103632 + ... + 2103651.

It is an arithmetic number, because the mean of its divisors is an integer number (9466389).

Almost surely, 2^42072830 is an apocalyptic number.

42072830 is a deficient number, since it is larger than the sum of its proper divisors (33658282).

42072830 is a wasteful number, since it uses less digits than its factorization.

42072830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207290.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42072830 is about 6486.3572211219. The cubic root of 42072830 is about 347.8034683231.

Adding to 42072830 its reverse (3827024), we get a palindrome (45899854).

The spelling of 42072830 in words is "forty-two million, seventy-two thousand, eight hundred thirty".