42789215 has 32 divisors (see below), whose sum is σ = 60632064. Its totient is φ = 28385280.

The previous prime is 42789211. The next prime is 42789247. The reversal of 42789215 is 51298724.

It is not a de Polignac number, because 42789215 - 2² = 42789211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42789211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166367 + ... + 166623.

It is an arithmetic number, because the mean of its divisors is an integer number (1894752).

Almost surely, 2^42789215 is an apocalyptic number.

42789215 is a deficient number, since it is larger than the sum of its proper divisors (17842849).

42789215 is a wasteful number, since it uses less digits than its factorization.

42789215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its digits is 40320, while the sum is 38.

The square root of 42789215 is about 6541.3465739097. The cubic root of 42789215 is about 349.7664155727.

The spelling of 42789215 in words is "forty-two million, seven hundred eighty-nine thousand, two hundred fifteen".