42247377 has 24 divisors (see below), whose sum is σ = 63032424. Its totient is φ = 27247104.

The previous prime is 42247357. The next prime is 42247379. The reversal of 42247377 is 77374224.

42247377 is a `hidden beast` number, since 42 + 247 + 377 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16451136 + 25796241 = 4056^2 + 5079^2 .

It is not a de Polignac number, because 42247377 - 2¹² = 42243281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42247379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97353 + ... + 97785.

It is an arithmetic number, because the mean of its divisors is an integer number (2626351).

Almost surely, 2^42247377 is an apocalyptic number.

It is an amenable number.

42247377 is a deficient number, since it is larger than the sum of its proper divisors (20785047).

42247377 is a wasteful number, since it uses less digits than its factorization.

42247377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 766 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 42247377 is about 6499.7982276375. The cubic root of 42247377 is about 348.2837806137.

It can be divided in two parts, 42247 and 377, that added together give a palindrome (42624).

The spelling of 42247377 in words is "forty-two million, two hundred forty-seven thousand, three hundred seventy-seven".