42237739 has 4 divisors (see below), whose sum is σ = 43220056. Its totient is φ = 41255424.

The previous prime is 42237737. The next prime is 42237743. The reversal of 42237739 is 93773224.

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 42237739 - 2¹ = 42237737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42237698 and 42237707.

It is not an unprimeable number, because it can be changed into a prime (42237733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491094 + ... + 491179.

It is an arithmetic number, because the mean of its divisors is an integer number (10805014).

Almost surely, 2^42237739 is an apocalyptic number.

42237739 is a deficient number, since it is larger than the sum of its proper divisors (982317).

42237739 is an equidigital number, since it uses as much as digits as its factorization.

42237739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982316.

The product of its digits is 63504, while the sum is 37.

The square root of 42237739 is about 6499.0567777178. The cubic root of 42237739 is about 348.2572936488.

The spelling of 42237739 in words is "forty-two million, two hundred thirty-seven thousand, seven hundred thirty-nine".