42361939 has 4 divisors (see below), whose sum is σ = 42383560. Its totient is φ = 42340320.

The previous prime is 42361931. The next prime is 42361951. The reversal of 42361939 is 93916324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42361939 - 2³ = 42361931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42361898 and 42361907.

It is not an unprimeable number, because it can be changed into a prime (42361931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7542 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (10595890).

Almost surely, 2^42361939 is an apocalyptic number.

42361939 is a deficient number, since it is larger than the sum of its proper divisors (21621).

42361939 is a wasteful number, since it uses less digits than its factorization.

42361939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21620.

The product of its digits is 34992, while the sum is 37.

The square root of 42361939 is about 6508.6049964643. The cubic root of 42361939 is about 348.5983096087.

The spelling of 42361939 in words is "forty-two million, three hundred sixty-one thousand, nine hundred thirty-nine".