42777375 has 16 divisors (see below), whose sum is σ = 71182176. Its totient is φ = 22814400.

The previous prime is 42777373. The next prime is 42777403. The reversal of 42777375 is 57377724.

It is not a de Polignac number, because 42777375 - 2¹ = 42777373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42777373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56662 + ... + 57411.

It is an arithmetic number, because the mean of its divisors is an integer number (4448886).

Almost surely, 2^42777375 is an apocalyptic number.

42777375 is a deficient number, since it is larger than the sum of its proper divisors (28404801).

42777375 is a wasteful number, since it uses less digits than its factorization.

42777375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114091 (or 114081 counting only the distinct ones).

The product of its digits is 288120, while the sum is 42.

The square root of 42777375 is about 6540.4414988592. The cubic root of 42777375 is about 349.7341518634.

The spelling of 42777375 in words is "forty-two million, seven hundred seventy-seven thousand, three hundred seventy-five".